I joined some facebook group and sometimes the members of the group offer a joint venture where the original investor has bought a property but will need my money for the renovation.

Thy would be losing money in that situation.

Being that I own it outright, and only need $125k (budgeting for unknowns), not many hard money lenders have been overly interested.

She will lose it.They are offering to pay off her $87,000 debt, they will remove the squatter, they will pour money into the property to ensure it sells for the highest value, and then they will give her an additional $240,000.She is getting $327,000 for a property that she is about ready to lose and it's probably affecting her mental stability and physical health.

The owner has lost several people’s money. 

Thankfully I bought them dirt cheap after the '08 meltdown so after years of break even I made money when I sold them. 

That seems like a lot of money in Mexico.  

The tougher part will be finding clients that want to work with a part-timer that has no experience and little time.If I were you, I would focus on dentistry where you can make really good money, then use that money to invest in real estate on the side.

I’d recommend getting terms from private and hard money lenders.

A lot of people are drawn to the guaranteed rent money but I found it comes at a significant cost and I did not think it was worth it.