7 Still Bed wetting.

My 7 year old still wets the bed, we limit her intake of fluids the later it gets and we cut all fluids off at 7 she still wets the bed. She has had a couple of accidents where she was just playing then she wet her pants is this normal? I think that she is just being lazy and not wanting to get up at night and pee because she was potty trained before she turned 2 and for the next year she would get up whenever she had to pee, but once my son was born that was when the bed wetting started. How can i help to stop this behavior?