Not much advice I can give right now (off to bed, since it's pretty later here), just support for the sitch you're going through. Your W sounds a tad bit too keen to be 'right'. A bit of a drama queen, if you don't mind my saying. And, not a bit empathetic to the pain you are going through with your knee.
Will come back tomorrow after giving your sitch a bit o' thought! Not that I'm the best DB'er on the planet, but I can see myself a little in your W, from a few years back (still blush at the thought of it), and maybe I can give you some insight.
Take care, and try not to get into any R discussions with her again - as they say here, it's a cheeseless tunnel.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim