Blogger vs WordPress Blog

There is some really sensitive information, including links to my published work (which is published under a psuedonym), photos of me, and other things that I don't want on the internet- all published on a free wordpress blog I started when I was about 12.

I have since lost the login info associated with the account (I think I used a throwaway email address). I don't know how I can prove ownership of the blog to delete it. I've been trying for weeks.

Since I probably can't, is there a way I can get old photos of myself/links to my writing removed from the blog? If WordPress considers me to not be the owner of the blog, can't I demand that the blog doesn't claim ownership to my writing and photos?

I don't know what could possibly be done legally, since I can't sue my 12-year-old self. I really wish there was a real person at WordPress I could talk to about my situation.