It sounds to me like she is a bit overwhelmed by her new surrounding and as a result things are just not " registering". I had one like this too and it took maybe 2-3 months but she got better...oddly enough her parents were also prone to brag about her achievements most of which I never really got to see at daycare. She also was very well behaved and I never had any issues with her at all but there was definitely a transition period where she seemed a little lost. I would give her more time to get into your routine and your program, while keeping a close eye on her.