When you've deleted her she will still be able to see that you have an account, she just won't be able to see your details/photos etc.
He said his account is set to private. Like mine, I am on facebook, but no-one can find me on there because I'm hidden. I can find them and add them, but I am not visible to anyone else, unless they are on my friends list. I'm assuming this is the situation with the OP.

This then leaves me to have to go through EVERY photo I've been tagged in remove the tag. To me this seems like an awful lot of wasted time!