I would put 2 spare sheets sets in her room, spare clothes and let her wear undis top bed.. Take her to the toilet before you go to bed or just go in and whisper do you need to go to the toilet.. I never wanted to do that with my boys but my youngest was very determined so we put night undies on and took him to the toilwt around 10 at night and we stopped it after a few weeks..

if she has say more then 3 wet beds in a row sit er down and talk about her body isn't ready to go so long without weeing... and so on and so on