Dude... lets just put out there which is already obvious to the rest of us, ...just not you:
You: some dude who she met on the internet, wanting to be a babys daddy to her, for some reason, on some chick you dont really know, on some other mans seed, & is now overly obsessing sending her repeated IM's, emails, voicemails.... meanwhile...
....you catch her online, after ignoring your ass for over a week, because of the already mentioned obsessiveness...
Her: ..umm, uh, no.... no this isnt Christina... this her,...umm, ya, Friend, ...Angie.
EASY OUT FOR HER, BECAUSE YOU CANT SEE WHO IS BEHIND THE KEYBOARD.
Dude, she had an abortion, because she dont know you, & you didnt father this child, she was out throwing the pussy around while you were trying to hold out for a love life, via the world wide web & "Having text" ...got pregnant, & realized she dont wanna have some dude be a 'babydaddy' to her that she met on myspace, of all places, & already has a kid of his own, living states away & the dude who used her cooter as a spot to drop his load... was like "fuck this mistake, Im out".
Sorry to have to be the one to break the news to you, but you need to pick up your nuts & turn the other way.
There are only certain circumstances to step up to the plate for some other mans kids, & unfortunately for you, this isnt one of those cases.