Hey Jeff... we cannot make the decisions for you, but I sure hope that you just treat her as you would have her treat you. You know what pain and frustration is like and you also have learned that it's no fun - so nobody is deserving of it.
The way you delve into a relationship should be set by whether you are ready for a commitment or not. If not, then keep it aloof, funny, and give her a chance to hold on to her open options if you are not sure you want a serious relationship yet.
So your question of should you call or not, depends on what you want her to 'read' into the message. You could call her to welcome her back and ask her out to a dance, then keep it casual unless she makes the first move.
As far as the other girls, if you want just one, you'll have to make a choice soon for your own sake. If not, then as I said before, be fair.
Lots of luck, and have fun.
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