Could it be an anxiety-based behavior? Worried that she might have an accident? Has she had any accidents recently or gotten the idea that it's 'bad' from somewhere? DD had an accident 3 weeks ago - the first in abt 6 months - and was MORTIFIED. We have never told her off or made any sort of big deal and it's prob only happened about 5 times since she was TT but she's a bit of a perfectionist and it really embarrassed / upset her.

Do you think she might enjoy the 1:1 time she gets when you take her enough for this to reinforce / increase the chances of her asking?

Otherwise, I do think it might be worth getting her checked out medically JIC she has a UTI, bladder infection etc. or perhaps getting a referral to talk to a continence nurse. We deal with one through my work and she is brilliant and knows a great deal about both behavioral and physiological causes and solutions.