Gary,
You'll have to proove loss. If you don't replace those dates, they are liable for them, but in all honesty .... it'll be more agg and $$$$ than the award you MAY receive.
If she's really a witch to deal with ... blow it off, and move on. You have no trouble selling your terrific services, so go where the pasture is greener.
Life's too short to fight.
IS she wrong? YES
Will you win? MAYBE
Is it worth it? Not in my eyes.