when i went up to bed i used to lift my son until the age of 9 or so, every night put him on the loo ask him to "do mummy a wee' then carry him back to bed, he was so fast asleep he would only wake a little bit, do his wee and fall right back to sleep,
i found it worth while just so he didn't wake up in the middle of the night wet.
might be worth a try just until shes over this little hicup.
x debs x