My daughter and young granddaughter live with me. I pay all the household expenses (utilities, etc.) plus at least half of my granddaughter's personal expenses (clothes, food, etc). My daughter and I file separate tax returns. Her ex-spouse has remarried and pays minimal child support (approx $200/month). I file as head of household but do not claim either daughter or granddaughter as a dependent. Does this prevent my daughter from claiming any child tax credit, etc.