Welcome to YT! I am sure she will come out of it! Taycie has changed so much since the day I brought her home. Taycie was the very quite, shy, picked on one, in the litter... When I brought her home she slept a ton and always was nervous around new things...
I remember wondering if she would ever bark or make a noise?... OH HOW THAT HAS CHANGED! Sometimes I think, Aren't you tired yet? Give her some time, I am sure when she understands she is in her forever home she will come out of her shell! Congrats! I am so happy for you both