I have an 11 week old baby and a 3.5 year old. My dd has started wetting the bed at night - when she had been dry for some time and tonight she did a pooh in the bath. I am not sure how to handle it - I let her know that she is a big girl and that wee and poohs need to be done on the loo - but she does not seem to take it seriously - I don't want to tell her off about it, but I do want her to take it seriously - any ideas?