Thanks to all.
I cant get her out of my head... but now as we remember all things with her its obvious that she was weak health from beginning. My brother got her from some seller on the vegetable market (Yes thats how most people got birds here). One nail was always missing, never grew back, she was possibly hatched that way. But she ate from our hands from day one. On her first time of the cage, weeks after she looked all around room from cage, she broke her beak, just the tip so it didnt complicate. One thing that i remember is that whenever she was flying more than two three rounds across room or to the other room, she was always panting, heavy breathing. I read a lot and knew all seed diet was bad for her, but looks like she got used to seed allready. We try everything, even after a day of no seeds she would not eat anything else. And she ate only oat and sunflower seeds, of course she liked bread, chips, flips. Not vocal a lot, only flock call us when shes alone or when hungry. Also she sleeps everywhere in the cage, bottom, feeder, perchs. Both legs or on one leg. I allready said in other posts that somehow after every egg laying she got weaker and weaker, little less self then before. One time almost died.
Last year around this time we bought new furniture. She was cowardly bird so her lack of flying and cage bound prescribed to new stuff. But over the year strenght never got back, she was afraid to jump from finger to cage from 10cm. She get out of the cage only when see us eating, and quick looking to get back. Napping almost all the time. I think she even not molted right. Didnt remove broken wing and tail feathers, also soft feathers was peaking under her wings and tail. And didnt clean herself as before. Also this was usual behivior when ever she was going to lay eggs. But i thing she didnt lay an egg for more then a year, even if she was "clicking" in the cage with tail up. She even sleeps on one leg day or two before she died.
From many posts i read about similar symptoms, it has to be some kind of kidney trouble that was slowly killing her over the years.
I feel devastated cause there is no vet that could helped her in 200km from here. And even if i got her to Belgrade i dont know if they could help, cause of lacking of Avian vets.
She was not my first bird, we got budgies and a tiel when i was really young. Tiel died from bugs after week at our home, most likely she got like that to us. Later i had two more budgies, one died form no visibly reasons and other we got after that one lived with us for a couple of years and died when i was on college. Then we nursed little sparrow. She was with us for 6 month tamed fully, but one day my father didnt see it on the floor. Only two days after that tragedy we got this beautiful lutino tiel Cupko, which mean Curly and its male name.
Most likely we will get another bird, but i dont want to look for her in other bird. I always liked cockatoos or african greys but they are too expensive. Maybe we get tiel again or ringneck, this time hand fed from good rasiers.
Again thank you all for support, means a lot. Im even hard to eat cause im expecting her to run to me to beg for food.