White people and having a black child.?

My neighbor has adopted a black child from Uganda( she is beautiful).
She and her husband already had other adoptive children but not one with her kinda hair,
the little girls is 9 so old and smart enough to know that she need some help,for a female child this is of great importance i am not saying that they are not good parents(they feed,clothe,shelter and i believe love her) but a woman's hair is her pride and joy and we all know that from a very young age and to neglect this can create some serious depression about one self worth and for the mother to show her that she cant be bother to do the hard work needed, makes the child sad.
She has seen me do my nieces and sons hair and has asked me to teach her.
This poor child's hair is a mess(natural african hair is more beautiful when kept), she just washes the hair put in a hair band or nothing at all and it looks dry and very unkept.

The little girl is just so unhappy sins her siblings have well "easy hair" and dont look dry or unkept, she is aware of how she looks and how the other kids(black kids) look.
The little girl nagged about her hair to her mother and couple weeks ago she asked me if i could help her with the little girls hair which i dont mind teaching her but she actually has no interest in doing the child hair she just wants to pay me to do it.
She even asked me relax it so its "easier", i just said she is to young and she shouldn't relax here hair until she is like 16 or even older but definitely not younger then 16.

(black hair is beautiful and don't need to be relaxed in my view, but to each its own taste)

You should at least know that u wash it once or twice a week and that you use some good hair oil and take care of her scalp or at least know u don't wash it everyday with all kinds of hair shampoos.
Not to forget put some proper cream on the child's bodyI
she actually has manageable length of hair, i dont mind helping or even doing it but at least show some interest and attempt to do something about her hair and hair skin, she needs more cream and moisturizing on her hair and body then the other kids she has.
I braid,wash and take care of the child but this is something mum should be doing.(i babysit once in a while and at least do here hair once a week(she comes all by her self to me and asks me to and i feel bad saying no so just do it for her)
i have spoken to the mother and said if she wanted me to teach i could but she said no you just do it and all pay you.
I mean if you wanna adopt a black child with natural African hair then you should learn how to do it right as well as knowing that she isn't like her other kids and need extra cream ?

(please don't post any racist or offensive comment about black people and "black hair" or white people adopting none white childeren)