Night time training can prove to be frustrating for the parent because this process is mostly led by the child, unfortunately. The best advice I can offer, because I have 3 children and due with my 4th in 3 weeks is to limit her drinks before bed time. If for example her bed time is 8 P.M. then no drinks after 7 P.M. You must encourage her to urinate just before climbing into bed, even if she whines that she doesn't have to go, make her go because there are always, what I call, "pee--pee dribbles." IF you stay up a little later, you can always wake her just before you turn in for the night to pee one last time. This is the technique that worked very well for me with all 3 of my children. Please remember that every child is different and she just may be a very heavy sleeper and is unable to wake herself when the urge to urinate comes about. It's not her fault but night time training can take a bit longer, depending on the child and I do not believe it has anything to do with age because mine were night trained before 4 years old. Don't beat yourself up....just try to be patient with her. Good luck.