Your call, but If she lives there i would make a VERY FIRM rule that if she lives in that home there will be RESPECT extended BOTH directions.
You tell her if she says anything negative or you catch her flirting with other men on facebook, eHarmoney, or any other website or her cell phone she is OUT
If she is just going to use your home to disrespect you and cheat on you behind your back that's cruel and selfish and I would tell her that if that's her plan she can live elsewhere...
I know its hard man... I know, but if you let her in unconditionally she's just giong to hit facebook and eHarmoney and eveyrthing else becuase YOU didn't set the rules when she comes back.
You REALLY need to get this into your head FAST.. That you CANNOT let HER call the shots here... She gave you two choices for friday.
My advice is to take option C - YOU call teh shots and THIS Is how its giong down - and you DO IT and Don't WAIT for her say so.
Whatever YOU want, you DO and don't let HER have hte upper hand.. she THINKS she's runnign this becuase she gave you two options and told you that she's coming back friday.. She's treating YOU like a CHILD
I am suggesting YOU show her YOU are the ADULT here and do something DIFFERENT and CHALLENGE her... When you back down to her play she just grins quietly to herself and loses respect fo ryou becuase you BACKED DOWN
Your call but I owuld make itVERY clear you want respect and civility from her and she's not shown any so damn far...
If you jsut agree to something at her command she is giong to run roughshod all over you and you will NOT get where you want in teh end... She will NOT respect a man she can push around