Question for FB users

I hesitate to post this because I wonder at this point whether anyone is even still reading. Anyway. . . . .

I have a question for those of you who are on Fac.ebo.ok. What is the appropriate etiquette for dealing with a friend request from someone you know but do not like?

Twice I have faced the situation where a high school classmate of mine who I haven't seen since high school graduation (over 22 years ago) and with whom I was never friends sent me friend requests. With the first person, I ignored TWO friend requests from her, and when she sent a third, I finally relented and confirmed her, thinking that I would just delete her later. (Oddly enough, she initiated a "chat" with me not long after I finally accepted and through that chat, I learned that she and her husband have also struggled with infertility. Actually, at this point, they have given up and are just living childless.)

Now I have the same dilemma with a second person. Again, she has now sent me a second friend request even though I ignored the first one. It has been in in-box limbo for a week or so. This person is someone of whom I have not one positive memory from childhood. In fact, we lived less than two blocks apart, and yet I've never been inside her house or vice versa, so that should tell you something about our "relationship" or lack thereof.

Thoughts? My instincts tell me to just "ignore" again but am wondering if anyone else has faced a similar situation.