There was an Anon who was posting the last few months of 2017 and who was referred to as MegaAnon. At one point she revealed she was a women. She dropped some good crumbs, but stopped posting soon after Qanon started. Maybe you’re thinking of her? I haven’t seen anything from Qanon claiming to be a she.
This post was from 3-30-18.
Q always refers to himself as we. I don’t think it’s one person.