Congratulations on giving your child such a great gift.
I think my 4.5 yr DD and I have weaned as well. We were down to every other night (she nursed just the once at bedtime since she was about 3 yrs). Not all of our reduction was childled, but was what had to be done for my sanity after having DS. She mostly hasn't asked for it over the last couple of weeks. One or two nights she'll bring it up and I will tell her that she can go to sleep fine without it as she has been doing for awhile now. She will sometimes tell me she misses it, but I tell her it is one of many things she has grown out of. She seems fine with this. It is bittersweet, but I am so ready to be done nursing her and am still nursing her 2 yr brother. I went about 3.5-4 yrs longer than I thought when I had her. Wow!
Again, congrats to you both for having reached this milestone.