As the title suggests, my almost 7yo has suddenly started wetting the bed. It started about 3 weeks ago and she's wet the bed nearly every night at home, but as far as I know she hasn't wet any other beds (we stay at other people's houses quite often and she also goes to her dad's once a week or so). She toilet trained herself easily at about 16 months old, and I took her out of night nappies at about 22 months old with no issues. So it's definitely a new problem.
She says she doesn't realise she's doing it and it's while she's asleep.
Any ideas on what I can do or why this might be happening?