it's possible she's doing this for the same reason my 4yr old pulls stuff like this (well, except the potty training, but she was the one who initiated it the last time, when she was no longer afraid of toilets and such and could do it for good... she wanted "pretties").... SHE LOVES being the baby... and LOVES TO ACT LIKE ONE.
Heck, do you know how much RELIEF (mixed with very little sadness because of her fun behaviors over the past year or two) I felt a few weeks ago when she told me... "Mommy, Mommy... I'm not baby Ruthie!!" (picture me trying to be composed and hide the shock in my mind) "I am BIG GIRL Ruthie!"
Further shock tonight. SHe has been calling her sippy cups (even straw ones) Baby's cups (as in Ruthie's cups... not that they are for babies) for as long as I can remember.
"Mommy, no more Baby's cups. I want GIRL cups. I'm BIG GIRL RUTHIE. Can I have a GIRL cup please?" Now, as I was too lazy to want to wash out her regular sippy, I got out a straw cup.... then she clarified that she wanted a "bottle" cup (cause it is more like a sports bottle of water... it's what she called them ever since she found out those types of water containers were bottles... when she wants to be clearer about what type of sippy she wants).
I could have dropped dead from shock... but I was sooo happy. She has been living on this constant belief (completely aided and fed by her brothers and Daddy) that she is this adorable baby, instead of the big, grown up girl she is becoming.
Of course, then I stupidly told her that, only because she was a BIG GIRL now, I was going to let her help cut out christmas cookies tomorrow... so she was getting all too excited to sleep and I had to put a movie on to get her to settle... but ah, well.
(I've told her only big girls get to make cookies, toast, anything she wants to help with)