Mate you got to be able to do better than THAT.

hey she was good in the sack what can I say

You can say to her that you want to be friends after all..just so you can make sure her parents have disowned her, plant doubts in her mind about a relationship lasting between anybody in the militairy or whatever, tell her providing for the twins won't be such a problem with you around to take care of things..when they split up (which they will) she will expect you to provide...say bye bye..you find her despair amusing...
Obviously you can think of something better but trust me it pays to attack from the inside..ppl can be more easily hurt and destroyed..by ppl they care about.

However i wouldn't waste a moments thought on her to be honest.

someone told me "dude there are other fish in the sea, dont settle for a whale"

I nearly spit tea all over my monitor laughing