To be honest if you can't rely on your agent, then you need to find someone else. 

I knew I could easily find tenants/roommates as the area is popular for young adults.

She has only said we need to talk like adults, which I have sent several olive branches.

I am looking for a rental property as well, for a residential assisted living or Adult Day Care.

As has been said if you don’t have anyone local to rely on you’re probably gambling.

If all adults are screened, you can avoid potential legal issues down the road, especially in cases where one occupant engages in illegal activities or violates lease terms.Financial Stability: Screening all adult occupants also allows you to assess the household's overall financial situation.

I wouldn't rely too much on airdna or any other similar third party.  

Rental Strategies and STRs: ADUs don't need to rely on short-term rentals to be profitable.

This is time for adult lessons, which includes meeting your financial obligations.

Don't rely on an appraisal.