Wife and I are back together after a long time any advice on how to win her over?

It is complicated your right. I am not the most experienced person in relationships but it does seem a bit, not weird but unusual. Lovely that you have helped bring her child up but for you two to be starting again, there has to be a spark and i'm not seeing that. I think rather than jumping straight back into family, mundane household life, you need to date, spend time with out kids around, hard i know. see if you have things in common still, if there is feelings there otherwise as hard as it is to admit you are putting your life on hold for something that at somepoint is going to end. in the end i don't know the whole story but if you are trying to be in a relationship together, aside you need to talk.