BSC product placement Picture

I was scanning a bunch of old pictures that my mother sent me, and while I was going through them, I stumbled upon this deliciously awkward picture of me in my early stages of pubery (4th grade)and if you look really closely at the bookshelf behind us kids, you'll see Baby-Sitters Club books.

And can I just say, I had a crush on the kid on the left. Mullet and all. Too bad he moved after fifth grade :P

Mallory Jacklyne ?

So I was flittering around on the wikipedia page for the BSC, and I was startled to see a middle name listed for Mallory. Her middle name is listed on other websites as well, and I cannot for the life of me recall where it was mentioned in the books.

I haven't read all of the books, so can someone help me out here?