Well I applaud you for taking the initiative to learn to do your daughter's natural hair instead of just reaching for a kiddie perm. I've had chemicals in my hair since I was six so until a few years ago I was clueless about natural hair. I have a black mom and that didn't mean jack for my hair. I think that's why kids are getting relaxers younger these days because a whole generation of women have grown up not knowing what their natural hair looks like so how are we going to deal with it on children?
In my relaxed days a few times I had to comb my ex boyfriend's daughter's hair. I don't have even have younger sisters so when I hit all those tangles I was lost but her dad was great at doing her hair. I would insist he do it the night before I kept her and pray it would still look okay the next day.