S.T.
she's only 3. doesn't sound like she has a shell per se, she's just figuring it all out. she actually sounds very outgoing to me- but she's smart and aware that sometimes her outgoing nature puts her in little situations that she doesn't yet know how to deal with, so she dives back to her comfort station. i wouldn't make a big deal about it at all, don't try and force her past her own barriers. if you stay calm and cheerful, this intelligent child will observe on her own that *this* is not a worrisome situation, and soon be able to apply this life lesson more broadly.
isn't it wonderful how kids naturally experiment and learn?
khairete
S.