Need help getting rid of lice

My daughter caught lice from her cousins bc their parents aren't doing shit about it, and i need help getting rid of it. I'm using a spray that helps kill them but she keeps getting it. I comb as many out as i can, but i found 2 baby louses in her hair. I found empy and live eggs also. I want a solution that gets tid of them for sure. I'm sick of this crap already 😤😬