No, I believe there are three 125ers (Pena, Modafferi & Rakoczy) but no 115ers
This is all a little complicated. In the issue of what have they been doing most recently the above is correct but I figure people might be interested in the details, or at least as well as I can recall them.
Pena fought Moras at a catchweight of 140. For a while I was thinking it was at 135 but then I remembered thinking that was a catchweight earlier today when I was thinking about older fights.
Pena had a fight against Kerry Vera planned at 135.
I cannot remember at what weight Pena fought Webber but I wouldn't be surprised if it were at 135. Webber tended to fight at either 135 or 145. I think she had one fight at 150 but cannot remember the details.
Most recently Pena has been fighting and looking for fights at 125, until TUF of course. I do believe her fight with Dunne was at 125.
An example of a time stamp of sorts. Fightergirls used to be the best sourced and updated fighting resource for women's MMA on the Internet. It has not been updated properly for over three years now, closer to four.
Here is a link to Pena's page:
http://www.fightergirls.com/fighter.asp?ID=1846
You will see that Pena is listed at 135.
Modafferi used to fight at 135. Her debut at 125 came against Rosi Sexton after Modafferi's loss to Sarah Kaufman. Modafferi has gone 0-4 since her drop down to flyweight (125), against top opponents.
Rakoczy also has fought at 130 or 135 against Zoila Gurgel. (I forget.) She did fight Felice Herrig at catchweight of 120. The rest of Rakoczy's fights have been at 125 that I can recall but I am not one hundred percent sure about her fight with Jennifer Scott (I do assume it was as Scott used to fight there before going up to 135).
Sorry about the messy post but the subject is complicated and messy.