mixed hair

I need to get this off my chest. So why the hell do white women that have mixed by black men do not know how to do their hair? For example, my cousins ex wife/ baby mama has his daughter (my little cousin) walking around looking like her hair has not been combed in weeks...it looks tangle up and matted. I really want to call up my cousin ex and give her some advice on mixed hair. Because my little cousin have to go through the humiliation. Some white women don't know how to do their mixed child's hair. My advice to white mothers of child who are half black, read a hair book or talk to your babies daddy mother about hair or go on YouTube, they have videos on how to take care of mixed hair.