I can't believe my grandma got remarried (again).

She's my grandma by marriage. She is my grandpa's third wife but he only lost one. He divorced my mom's mom. His second wife died. But my step grandma remarried just a couple of years after he died. Her first husband also died. And she's in her 70s prob almost 80 now. I don't think I could remarry like that. And at that age. I just would be done.