Will I be held accountable for the cost of the birth of my grand child?

This is a question for a family law attorney but just taking a guess, the medical insurance company should have to pay for the medical care given to one the people that it insures (IE your daughter) What if she had her own insurance and was having the baby alone? Do you think that she would not be covered? Why should it be any different just because you are paying her premiums? I would talk with your medical insurance provider again.