Night peeing is different than day peeing: the bladder releases involuntarily at night when blood sugar drops. Most toddlers will not wake up when they have to pee at night ~ so the goal is to get her bladder to not release.
Monitoring her night time blood sugar by giving her a high fat, low sugar snack before bed is the trick. This will keep her blood sugar from dropping in the night and she will be dry when she wakes.
High fat/low sugar snacks include: cheese and cheese sandwiches (or crackers), nut butters on toast or crackers, beans, avocados... The more she can eat at bedtime the better.
Also, DO NOT WITHHOLD DRINKS AT BEDTIME! Dehydration acts the same way on the bladder as low blood sugar. The brain is hungry for water and will send a message for the bladder to release.
So a good high-fat, low-sugar snack with water at bedtime should do the trick.
And remember J., night time bedwetting is not a training thing ~ it is a physiology thing. She will get a better night's sleep all the way around if she is well-fed and well hydrated before she goes down, even if she wakes up wet.