How delete a person from the tree

Hi,
I have one person in my tree that shouldn't be there. Unfortunately, I am unable to delete it. I already deleted everything from her profile, but I can't delete the parents. I've tried different ways and nothing works. I will add that I am the manager of this profile. Here is a link to that profile, N.N.: Частный профиль

Please help !!!

regards
Bozena