so I have a house under contract, this is for my primary residence in rock hill sc that I intend to house hack, and in my due diligence period the inspector found evidence of powder post beetles and extremely high moisture under the house and I'm wondering what this could end up costing me if i get it treated and have a vapor barrier put into the house and put up gutters to get this house to qualify for the loan and then it proves the damage is a lot deeper than inspected like into the sub floor i included some pictures to show the damage the inspector found  still have a week and a half till my due diligence is up (2/26/19)the really wet part is the beam at the front of the house around where the front door is 

She is an up and coming musician (known) and I feel comfortable with her being solely responsible.

If yes, work with her, be diligent, timely and fair about the repairs.

If you think she has other positive compensating factors despite her being deceitful -- keep her. 

I would seriously consider putting down a vapor barrier, 3/4" plywood, a vapor barrier and LVP.

She then begins yelling at me that it sounds like our washing is going to crash onto her bed and its so rude of us to run it this late and she is done with it and we will get  written up.

Fibermesh only is fine, just make sure no matter what they do, whether it's rebar or fibermesh, that they put a poly vapor barrier down and pour on top of that.

This acts as a good vapor barrier at the same time. 

Water vapor hitting a poorly insulated cold area then turning into liquid water maybe. 

Because the substance is cooked, its vapors can also cause accumulation in the ducts and air handler.