Have to admit your text was a bit strange, but if the ladies want to talk about masturbation by all means go ahead. Won't find blokes doing that, unless it's discussing the size of our cocks.
On a serious note, it seems very over the top for her to block you and cut you out after that. Maybe she thinks you're into her? Who knows. Someone who cuts you out like that doesn't deserve to be your friend. You've got to move on, don't look for closure.