Thank you for posting this. I am only going to make this suggestion for you to try. It is up to you if you'd like to try it for the sake of "resetting" Penelope's digestive tract and "blanding" down her nutrition just a little bit. You have stated that her TT/WF have improved, therefore you are definitely doing the right things for her. How about the following?
Make 3 days worth of the following recipes one week at a time. I don't like to freeze anything beyond 4 days' worth and I notice they don't like to each anything frozen too long.
(WK 1)
Breakfast - Replenish daytime trail mix. Serve some of the fruit you have listed on the side. However beware of fruits as they are very high in sugar. Moderation is key. ***Do one type of fruit per day and no more than a tea spoon full.***
Dinner MASH 1 serve 3 or 4 days - Natural, multi grain cous-cous, brown rice, just a little bit of beans (no more than 10% of the mash to be beans), very few legumes (also high in protein), green beans, org. carrots, red/green peppers, celery, peas, red pepper flakes. Add daily those veggies that spoil easily like broccoli or kale and sprouts.
Keep a dry trail mix in her cage through the day (something like the no-allergy mix from aviannaturals.com is something I'd highly recommend)
Alternate dinner - Dry mix (as mentioned before - healthy, natural cereal base, dried veggies, etc high in fiber and grain)
PM snack - 1/2 a walnut (raw, unsalted, organic) every other night and a dried unsulfured raw banana slice every other night
(WK 2)
Breakfast - Replenish daytime trail mix. Serve some of the fruit you have listed on the side. However beware of fruits as they are very high in sugar. Moderation is key. ***Do one type of fruit per day and no more than a tea spoon full.***
Dinner - MASH 2 serve 3 or 4 days - Nartural grain pasta (non-enriched), quick barley, black eyed peas, chick peas, green beans, org. carrots, red/green peppers, cauliflower, peas, red pepper flakes. Add daily those veggies that spoil easily like broccoli or kale and sprouts.
Keep a dry trail mix in her cage through the day (something like the no-allergy mix from aviannaturals.com is something I'd highly recommend)
Alternate dinner - Dry mix (as mentioned before - healthy, natural cereal base, dried veggies, etc high in fiber and grain)
PM snack - an almond (raw, unsalted, organic) every other night and a dried unsulfured raw banana every other night
(WK 3)
Breakfast - Replenish daytime trail mix. Serve some of the fruit you have listed on the side. However beware of fruits as they are very high in sugar. Moderation is key. ***Do one type of fruit per day and no more than a tea spoon full.***
Dinner - MASH 3 serve 3 or 4 days - Natural multi grain cous cous, rice pilaf, black beans, yellow/red peppers, zucchini, red beet, green beans, org. carrots, peas, red pepper flakes. Add daily those veggies that spoil easily like broccoli or kale and sprouts.
Alternate dinner - Dry mix (as mentioned before - healthy, natural cereal base, dried veggies, etc high in fiber and grain)
PM snack - a cashew (raw, unsalted, organic) every other night and a dried unsulfured raw banana every other night
Repeat starting at WK 1.
You can switch fresh fruit from breakfast to PM snack because you're using the trail mix as a base.
In a nutshell this is what you're doing:
1 trail mix (left throughout the day in separate dish)
1 dry mix (given as alternate dinner option)
3 mashes to pick from
Adding various benign items such as moderated nuts, fruits (dried or fresh) and additional ingredients to mash as you see fit.
Water - only filtered water. No tap water.
Regarding egg shell - there are arguments for and against this practice. I would omit this because of two factors: it has not been ever proven that the egg shell actually replenishes the type of calcium needed by their bodies and can sometimes cause adverse side effects and you don't know what the chickens that laid those eggs were being fed or what medications they were being given. I would substitute organic, cage free, free range hardboiled egg whites instead once per week and further down the line give her a tiny big of yolk but only after good progress is made. Remember - protein!
Notice I omitted the sesame seeds. These are OK in moderation but not every day as they are high in fat.
High fiber is key so utilize those but omit the ones you know Penelope is sensitive to (
High-fiber foods - Mayo Clinic This is a list of high-fiber foods that you can intergrate to the mashes or mixes you've pre cooked / pre mixed at any time.
What you are doing is making a BASE which can be altered or added to at any time with additional nutritious items but only after Penenlope's digestive tract is stabilized and neutralized with some very mild ingredients that should cause her no harm.
You are also omitting a meal time and instead replenishing it with keeping a trail mix available to Penelope at all times. This is ok and will alleviate your trouble over trying to find something new and interesting for her all the time. She doesn't need 3 full meals per day like humans do. You can take my advice and build upon it and just know that it's just my advice. Many others might find issue or ways to improve upon it, but I can tell you that I've worked with my children for many years using this easy food system and without slaving over a hot stove going out of my mind to keep them interested. When I first started caring for Eclectus the biggest mistakes I made were with an overabundance of foods and the stress of providing. I found over years of trial and error that simplicity is better than anything and starting with a good base foundation that is on a neutral level then keeping it interesting by adding an ingredient here or there each week is the easiest way to do this. In the wild, Eclectus eat the same things all the time every day. They cherry pick only the most pleasing fruits like figs and berries and they are tree top dwellers and rarely come down to the ground to find food.
Please let me know if any of this sounds good to you.
RJ.
She was prescribed Gabapentin to treat discomfort. 
Poor girl
She get do it she can get through this 
to us, might actually be well received by them. So, don't trouble yourself to a worry over what to give her. Find two or three mash recipes, and alternate each week, 3 times / week then stick with a dry dinner the other 4 nights.
