Private User I just looked, and the parents are locked on Mary Prince
Here is a better discussion board for getting things done quicker. (unless the profile has a LOT of managers, it is hard to know when the few who are listed see your Discussion at the profile. Some people aren't active. I just happen to be a mgr and am on several times a week)
For general things like this that are obvious, you can use the CURATOR thread. I would post your same comment there, but copy a link to the profile you need to fix (it is the daughter Mary (Hinckley) Prince who's profile needs unlinking). You unlink from the child, not from the parent. It definitely needs a curator. Add that the wrong parents are locked at the Relationship tab.
https://www.geni.com/discussions/257430?msg=1637499
For things were you need someone to help research, etc, and it's in the appropriate time period, the Colonial Tree thread is better (say if 2 daughter Marys were linked who could plausibly be daughters, but probably one is incorrect unless one died young. Or the name is incorrect.)
https://www.geni.com/discussions/185827?page=239