I am trying to delete a relative I erronuously placed in the wrong position in my tree, she is deceased for almost a hundred years, so obviously not claimed

Help. I am trying to move my great grandmother (Gittel Kostenbaum), which I erroneously placed inside my great grandfather's family (Moses Herzmann). for some reason, while I already placed all the relatives back into my great grandfather's family and added him, I still am unable to delete her, as the profiles of his entire family are still connected to hers. How do I do that without losing all the precious information I placed into his tree?

There has to be a way as deleting her doesn't effect the tree which is still connected to my grandfather through his dad.

Thanks,

Liav Hertsman