It was true that they weren't on good terms but Penny wasn't spiteful to play a joke as dull as that even though Damien thought otherwise. Her uncle had lost his fingers thanks to Damien turning them to dust by using his hand which was more than enough along with the humiliation of what they had done to her to be known by the other villagers they lived with.
Penny said, "I wouldn't do something like that, Aunt Marion."
"Penny is right," Damien supported her, "If she really wanted you dead, I would have you in the coffin before you even knew it. If you're still alive it means we had nothing to do with it."
"You broke my husband's fingers, made it such that we cannot earn-"
"This is what happens when you try to sell people out who trusted you," Penny retorted back at the woman before she could play the victim card, "Did he tell where this grave was dugged up?" she asked her relatives.