Each state has it's own rules for inheritance when someone dies "without a Will". In PA everything goes to the spouce; if no spouce then equally to children. I believe in Indiana everthing is divided between living parents & children. So, you need to look up rules for your state. That's how I learned the rules for IN where my newphew lives. If mom did not have a Will, than you & your sister probably inherited the trailer equally & you can relinquish your share to your sister so that title can go in her name.