How are investor deals typically structured? 

Good incentive structures are a good way to make things go better.  

To help attract partners you may want to have an idea of how you would structure the above deal and what your needs are.

I've owned a rental property before and currently have a home I'm doing a rent to own with someone. I've been looking to get another rental property under $40k after repairs.

Some of the properties are mobile homes ...

I've owned a rental property before and currently have a home I'm doing a rent to own with someone. I've been looking to get another rental property under $40k after repairs.

Some of the properties are mobile homes ...

Is there a way to structure a deal so I take over her financing terms?  

That way you'd get more accurate numbers and inspectors will be more familiar with the regional hardships buildings and structures endure and are damaged by.

The key factors here are experience (and how well that experience transfers to the property / business structure in question) and relationships.Using myself as an example, I currently own and operate 6 SFR townhomes.

I know little about private money such as deal structures, avg rates, and finding individuals interested in such deals.

Structures are like people in that the inner condition is reflected in the outer condition, thus any readily apparent deferred maintenance is a harbinger for more problems waiting beneath the surface.