Mom needs to stop encouraging her to call by answering or coming in.
She's new so maybe she wants company to feel safe. Just don't want her to start calling for attention which is naturally what they will do. Its best she learns you will come back & to quietly entertain herself.
Sometimes it helps to start a routine. Tell her you are leaving & will come back.
You'll have to work on that & hopefully it will iron out when she is more comfortable in her new home.
Likely she was someone bird & then given to petshop to sell. don't know what her previous life was like.
Still she's had a lot of changes recently so needs time.
I'd cover her with a dark cover & try that. If she's never been covered though it could scare her & she could fly into bars.
You have to rest it out. Cover her at say 8pm. Likely she will be in her hut & not notice it. Then hope she sleeps til 8AM & then uncover. Adjust it so that she will get 10 to 12 hours of sleep.
She sounds cute talking to you like that!
May work better in your bedroom so she won't hear your sister however she will want to get up when you get up so hopefully it works with family schedule. Birds generally like to get up early so hope you can work it out by covering her or getting black out curtains for your room so it is dark until you get up.
Good Luck
I bought a new toy from Amazon that should be arriving tomorrow. It's made to be destroyed. It has a ball in the middle filled with papers they have to pull out. I'm hoping it'll entertain her more. The toys she came with are just in okay shape and she doesn't seem to be super excited about them. I've told my mom several times, birds are like kids. I believe I read somewhere they have the mentality of a 4 year old. I believe it.
I was told she was bought directly from a breeder. I don't know if she was hand raised. In the pet shop she was surrounded by a few finches, and a male sun conure right next to her.
I'm glad I only covered the top portion of her cage. I'm not sure if she was ever covered at night I certainly don't want an injury taking place! She happily goes into her hut as soon as she sees the sun setting or like tonight I turned the lights out.
I'm really hoping this works. If it doesn't I will do what you suggested and get black out curtains. Even if she does wake up early tomorrow I think she'll be okay. She's very talkative and at the foot of my bed. She would have full sight of me, she doesn't scream if she's with someone