How often do you wash your hair ?

I’m mixed Pr , CV , Native American, Portuguese I’m light skin with straightish wavy hair. I live with my Mother in-law with my SO and daughter we moved to mass from Arizona. Now my SO is Haitian and every time I give my daughter a bath she always has a slick comment about her being black I don’t have to wash her hair every time she’s not like me with “white people hair” I don’t always wash her hair when she has a bath but since she has very curly 3c hair I always put her hair in like ASAP rocky or pop smoke braids lol just because it’s easier for me she doesn’t like to sleep in a bonnet and when her hair is in a fro when she goes to sleep it gets really really tangled and she doesn’t like when I comb her hair. I’ll wash her hair about every 3 to 4 days I don’t like going any longer than that because her hair gets so dry. Am I not supposed to wash her hair just because I’m not black and don’t have the same hair type ? She says she’s joking but she always has to bring race into everything the involved me and my daughter I can’t stand it so my question how often should I be washing her hair.