thanks for your helps. this happened only today I will wait if is happening again and will take her to the vet. She might just had a hard time and need more time to settle down. after a long journey from Hamm she ended up Muji`s house where I got her from. then she had to come to my house to a new home again. she is very shy, likes to hide a lot, but I try not to disturbe her at all. thanks