You're still in the home, still married,- what exactly IS your financial arrangement? Does she work? How do you split the bills normally?
What I guess I'm getting at it this - if you normally would pay for the repair, and you are still hoping to stay in the home with your daughter - maybe you need to have clearer guidelines for what the financial aspects of this "in-home separation" will look like.
If you're just mad at her for refusing MC - this looks a bit like childish tit for tat. Not helping your cause if you still hope for reconciliation.
On the other hand, if you are DONE with the marriage, and feel this is a reasonable thing to deny, then fine.
