the only thing I can say is that the abortion will feel wrong and hard to deal with, but it will be necessary. is it endomitriosis? she probably feels worse than you by a mile, but you probably already know this.
it will be better on the other side of it. not at first especially not for her. if you ever do procreate properly it will be very hard to deal with. it was tough for me early, and that girl from HS and I broke up a long time ago and it wasn't a big deal anymore and then like 15 years later I just feel awful when I think about it.
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"would a sausage by any other name smell as sweet?"