It is highly unlikely that a grandmother would be given custody just because the father lives out of state. If there are other factors such as abuse by the father then, possibly, but not certainly. The court would look at the case carefully and decide what is best for the child
Momaday had a good relationship with his grandmother in The Way to Rainy Mountain. It was about their journey in the state of Montana.
Your grandmother's mother is your great grandmother.
Your grandmother's mother is your great grandmother.
The court would have to award you custody.
Your grandmother's mother would be your great-grandmother.
Your grandmother's brother is your great uncle.
Your grandmother's mother would be your great-grandmother.
Your grandmother's mother would be your great-grandmother.
* If your husband's children have accepted you as a step-mother and you get along then you would not technically be their true grandmother; but, if his children want you to be part of their children's lives then yes, you could be a grandmother. The children may with to call his former wife 'grandmother; granny, grandma' but they could call you 'nanna; nanna Mary (by your Christian name) or may have a nickname for you.
In nearly ever situation the answer would be no. The new state would have no personal jurisdiction over the debtor. The lawsuit should be filed where the borrower lives.
becaude they would return the state war.