Because according to your family who has been working on your relatives, she was sealed to the wrong father. As you can see in her change log:
Her record was created Dec 2015 with just her mother connected to her based on the 1900 census:
In June of 2016, a father was added to her:
She was sealed to those parents in 2017.
In May of 2022, her father was changed and a reason why was provided:
Since her father was changed, the sealing needs to be redone. Or all of you working on this family need to get together to confirm or refute the current research conclusions.