If you really don't want kids, please at least take the necessary precaution, not to keep forcing your girlfriend abort and in this case worst, don't even want to help pay for abortion.
I know of cases like that on the other end of the spectrum as well, one lady kept getting pregnant because her boyfriend was super rich and even though she knew he had a wife in Indonesia, she got pregnant twice. He kept her after she aborted the first one and the 2nd one she forcibly went ahead with the baby even though he still refused to do anything for her. She quit the company so that she can devote more time to him and last we heard she even went to Indonesia to look for him.