as I said in the post I have contacted the person who did so.
They have responded, basically saying that it is impractical for them to contact people when they are tidying up profiles of those who have left WikiTree and that I should review my unwanted profiles.
She should have removed me by now.
Which is all fair enough I suppose but in at least this case will have involved her in just as much work.
I do review my profiles reasonably frequently, particularly when a change comes to my attention and I wonder why, but as the person who added me to her profiles initially is no longer a member and I am interested in some of them but not all of them, it will take a while to work through them!