Mass email

In the past (before I saw her true character-manipulative, controlling, etc.) she wouldn’t accept any my invitations, and if she did, she would put stipulations on the invite that would satisfy her (i.e. completely changing the place, time, etc). Now she keeps including me on a mail email blast, with 400 other people. I don’t wish to be friends with her, nor do I wish to receive her emails. We have mutual friends and I don’t wish them to be caught in the middle. What should I say and how should I say it to save everyone peace of mind?
In order to block her I have to delete her FB. Deleting her would create a world of problems. So I figured if I am going to delete her anyways, might as well let her know shy.