Sorry in advance for my english, I'm not a native speaker. Some background:
I got pregnant at 20 years old, while I was at the University. My partner was living back then 400 km away from us, so my oldest kid first years, we lived with my parents and my two bros in a litle town, where everything is near and the life it's not so stressful. While I was at classes, my mom takes cares of her, and we spend a lot of time together. When she turn 3 years old, I finished my studies, got a job and moved from my parents house, to live with my child's father, 400 kms away from them. We travel constantly to visit my parents, like one or two times a month (it's a five hours train trip). They love her to pieces, it's their little monster. She's now almost 6 years old, and can't adjust to her new lifestyle. Unfortunately, she haves to spend in the school from 9am to 5pm (I know, it's horrible, but this is how things are in my country) and travel for like one hour to get home. Every time she misses grandparents' home she says: "I don't want to live here, I want to go back to Tita's (grandmother's house)". Last time she cries a lot. I can't go back to that town (even it's my biggest desire), we -me and my husband- are engineers, and the works available there are horrible and depressing. But she simply can't adjust to the fact...it breaks my heart everytime she says that Tita's house is her home, and the apartment we live is her castle. She never called the apartment home. Another "interesting" fact, it's that every time we come back from the town she throws tantrums in a daily basis for like a week or more.
How can I deal with this situation? We go to therapy, but it wasn't much helpful.
Thanks for reading
EDIT: I forgot to tell that my daughter when we move, starts to show some signs of anxiety: bruxism, eats when she's bored and bites her nails. This things make me so nervous, because I have Generalized Anxiety Issues and panic attacks, and I don't want my little kid suffer it when she's old.