I estimate my absorption rate alone will make back at least 50% of the additional investment on the initial lease up and the rest within the first two years on saved maintenance costs and lower turnover.

I don't particularly want to sell my share of this property as it has appreciated quite a bit since we've initially invested and I'm hoping I can eventually get him moved out to turn it into a full-time rental property.

For my first property, the appraisal came in $25,000 lower than expected, which initially concerned me.

If you spend $300k for asset that is only worth $100k, the initial income above expenses goes first to recover the negative equity position.  

You can hire an agent just to show and be a body if they are willing, While its not perfect, ChatGPT is a great tool to ask initial questions and get a launching pad (always verify what it tells you)  - @Drew Sygit - Good point about getting someone to help you with screening if they dont have any "skin in the game" so to speak.

to boost your initial outlay, or to improve the properties, etc... 

Syndications are setup as limited partnerships so your only putting at risk the initial investment amount at most. 

I made two verbal offers and three written offers, and closed on one of the properties approximately three months after I initiated the property search.  

She was upfront to her credit and has assets but I don't see that he is taking initiative here.

(The first aspect is the religious zeal that the “mentor” tries to initiate).