I think the best thing to do would be to find someone who knows how to do their hair to either teach you how or you can pay them to do it really nice once a week (or less often). I used to get paid to care for a little girl's hair in a group home because no one knew how to braid it.
It's really easy actually. I think it's way easier than doing straight hair. Just use some extra conditioner and first comb her hair with a pick. You need to get one of those combs that has fine teeth on half and a long, skinny, stick (with a pointed end) on the other half. Once you get her hair combed, use the stick end of the comb to divide it Try to make the line as straight as possible. When you divide it, put whatever hair you're not working with in a scrunchy (sp?) or clip. Something that will keep it from tangling but keep it out of the way. You can do really nice regular braids if you don't know how to corn row. If you have someone teach you though, it's really easy. Find a nice hair do that she likes because if you do the braids nice and tight, they can stay in for at least a week.
If I lived anywhere near you (which I see I don't) I'd be more than happy to help.
BTW, I have lurked here and there on this thread but I realize I haven't even posted! (so not like me!) :LOL
Our kids are triracial - or more. White, Black, Latiino, & Native American. They all look mostly like me. They are pretty light skinned and the youngest two have almost straight hair! (of course just my luck since curly hair is easier for me to do
I don't like the term biracial at all though. We used the term mixed and we like it.
*ETA: There is some pink stuff (like a hair lotion) that I used to use too just to make it slicker and keep the fuzzies from coming after sleeping on it etc. I think I have some. I'll come back and post the name if I do...it's not very "natural" though.