It would have to be priced correctly to cover both parties (assuming my biggest take is the lot and a percentage for management and commission that my broker will charge.) 

We're off to a good start, having successfully purchased two properties since then and closing on our third soon. 

Most people make the rent/mortgage payment their #1 priority (over partying, car payments, etc.) because being homeless really sucks.

One or two third-wave Coffee locations on all the cape.

You don't contact the other party until you have some definite Leverage that you can negotiate.

Most contractors subcontract the work to someone else and then you have another layer of profit for a 3rd party included. 

I did something like that some years ago https://creativeloafing.com/content-177196-Talk-of-the-Town--Block-party-February-10-2001

The other thing to consider, especially with a SFR is the potential of someone throwing a party and trashing the place.

It depends on the specifics of the deal, the relationship between the parties and what each party thinks is fair.I would suggest sitting down with her and having a discussion about it -- something you probably should have done earlier, but better late than never...

@Andy Mirza frankly I did not trust the party that put me on title so I secured an attorney to navigate the issue and act in my best interest.