Nothing if your daughter is under the age of eighteen then that's when you can do something but if she over eighteen there's noothing you can do just deal with it you can go and visit them and find out what going on but you can force her to come back because she already settled and it sounds like she kind of stubborn but if she's in a bad environment you can try and get custody of your grandson but you can do nothing for your daughter
Mother's grandson as regards her daughter is either her (daughter's) son or her (daughter's) nephew.
Your grandson.
If your daughter-in-law's grandson is a child from a marriage before she married your son, or after their marriage ended, her grandson is not related to you. If he is a child of the marriage between your son and your daughter-in-law, then he is your great grandson.
your grandson.
aunt
Your grandmother's sister's daughter's grandson is your second cousin, once removed.
Your grandson.
Your grandmother's grandson is you, your brother or your first cousin. So your grandmother's grandson's daughter is your daughter, your niece, or your first cousin, once removed. You are her mother or father, her aunt or uncle, or her first cousin, once removed.
Your daughter's son is your grandson and you are his grandma or grandpa.
Your great, great great grandson.
what are grandparents changes of getting grandson age when daughter is sleeping with father in law
Your daughter and your uncle's great great grandson are second cousins, three times removed.