So, you’re at someone else’s expertise, decision making, experience, analytical skills, information flow, managerial capacity, oversight, etc.  

It's of vital importance that you speak with your GP to determine the root cause of the capital call so that you can make an informed decision on whether or not you should provide it. 

Learned some negotiation skills through this deal.

You have a skillset that could be extremely useful for quick fixes and landlord issues and from there you can bridge relationships and partnerships to enhance your knowledge of real estate investing and couple your skills.

@Kenneth Jenkins you forgot to mention owners that expect a PMC to use contractors off Craigslist that are unlicensed, NOT insured and rarely have acceptable experience/skill - but, they quote the "best" price.These same owners will sue a PMC if using these types of contractors results in a tenant lawsuit.

With a 7% interest rate and high HOA fees, the key is evaluating if your skills and investments can generate higher returns elsewhere.

You'll want to work with people who are highly motivated and skilled in their field. 

She is also the property manager.There are a LOT of skills, experience, knowledge, and resources required to acquire and operate good investment properties.

Having a vision for future projects like the ones you mentioned are great, but learning the ABCs of RE with a small investment (initial down payment - since you only need 3.5%-5% down on a primary) is the best way to sharpen your skills.

A common theme amongst those who are successful scaling a real estate portfolio and affiliate real estate businesses is organization skills that allow for systems to be implemented.