This IS messed up.
It does come to mind though that if some 15 year old boy had sex with an 11 year old girl and got her pregnant the reaction would probably be a lot differant with people screaming "teenage rapist" even if he claimed "well she looked more mature and I thought she was older".
There is nothing paticularly good about this, but despite her willing to take responsibility, I'm kind of surprised there isn't more finger pointing in her direction, and if anything they tend to be sort of implying the 11 year old boy is responsible for seducing her and well... you know.
The point about him attending the middle school also get's my attention, I'm wondering if she's just a teenage pedo with what the Japanese would call a Shouja complex (I believe) or whatever, who is getting away because she's a girl, got pregnant, and is doing a good job of proclaiming ignorance.