You have to realize that she may not be mad at you... She's likley still PO'd at OMW...
You need to tough through it OIN... That's how we all cope... keep busy, volunteer work, offer her an inviting place to turn to when she has a bad day.. and wait it out.. patience is a necessity here... It's not an option...
She'll get over OM, but he needs to send a VERY STRONG MESSAGE that he is NOT at ALL interested in her... He's NOT been doing that... I suspect he enjoys her chasing him and has been encouraging it... I don't buy is innocent victim story at all...