D.
I had the same thing with my oldest daughter. She was in pull ups until she was 5 during the night. She was a really deep sleeper and would not wake up to go the the bathroom. So ultimately, what I ended up doing was limiting her drinking before bed time, once 7 pm comes, no big cups of juice/water, etc. Just a little sip if she was really thirsty. I definitely made sure she went to the bathroom before going to bed. Then usually I would go to bed a little later than she did, so right before I went to bed, I would wake her up and make her go to the bathroom again.
She's six now and in the past year, I think she may have had maybe one accident.
But I do remember going through what you are right now and thinking, "Will she always be wearing pull ups to bed at night?"
Good luck and as with all child rearing, it will happen, probably not when you want it to, but it will! Just be patient!