I would confirm by seeing the product then going out and checking comparables in that market that have sold. 

I asked to cancel a bed frame and I did not get a  confirmation until I followed up 3 days later.

When they apply is when you should confirm their identity.  

. 😉  Lack of investment capital (money) ought never be the obstacle because if the deal is right, the money will always appear.Then, you’ll need great data sources both for identifying opportunities and confirming the facts.

Do you have an inspector come out the property every time or can we use app to confirm work has been completed?

They can send you comps so you can confirm the estimated ARV.

She's not going to have any leg to stand on in court if you get that far unless there's some explicit language prohibiting the owner from assigning responsibilities to another legally authorized party, and I'm guessing there isn't if another PM company was maintaining the lease and provisions - and the fact that the tenant was voluntarily working with the other PM confirms the acceptance of an authorized agent even if it's not explicitly stated, the same way if you accept rent from a tenant after a lease expires you imply acceptance of the lease terms continuing (which is why you should always have a holdover provision). 

I 100% agree with the intent aspect and that is an important premise, but the fact is in this particular situation intent for it to be personal use has been confirmed (by way of a public post).

Well, I think @Christina Carey beat me to the $25,000 check but I'll confirm that Vena Jones-Cox offers a course titled "The Very Unsexy but Oh-so-Critical Fundamentals of Making money in Real Estate".  

It can be done ethically, but you need safeguards to confirm mortgage & possibly property tax payments made on-time, as well as insurance with you protected.- Also, you need a legal way to take back the deed if buyer defaults!