Reporting
You should wash her hair once
You should wash her hair once a week. You can use a drop of olive/coconut oil daily, and put it in two braids/ pigtails. Or you can blow dry her hair and use a flat iron then put the oil in her hair. If any water or moisture get to her hair it will frizz up again. If you comb and oil daily and keep braids in, it will tame her hair.