It sounds as if she is v anxious , OCD behaviour manifests as a way of coping with anxious thoughts if that's what they are . You say she is at nursery 7.30 till 5 ? it is a very long day for such a young child and perhaps she is over tired on top of everything else .
I would not stop her having her `comfort items` until she is more settled in the new house especially as she gets so upset . Maybe try to undress her when she has gone to sleep so she doesn`t boil !
Quite often they grow out of these things but I understand your concern , maybe you could ask her about it when she is with you to try to find out if something is bothering her .xx
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