Then she quit saying that I didn’t respect her and I had to scramble to hire someone else. 

Send a written notice (yes, paper) to the tenants with proof of delivery required (the postal carriers have this time to an art form; it's inexpensive and you get confirmation via email or receipt very quickly; it does not require the tenant to sign - it just confirms that the notice was delivered.A paying, respectful tenant is golden.

I also still have 60% of my line available, along with current savings to do another deal.With respect to paying off the seller note, I have been working with a number of people discussing private lending.

If it gets you that distraught, maybe you look at respecting or ignoring someone's opinion without discounting just so you don't come off looking like a desperate shill.

He had a tech job and we talked the business and he was legit and when meeting the family, they were very respectful. 

That being said, you could be the individual who helps identify this respective vendor.

There are many, many people in other service-oriented professions whose entire business models are based on selling their time and knowledge (information).People that expect everything to be handed to them for free, with no respect for others' time? 

And they sell lots of them.My issue with them is that from a quick look it looks like they're selling everything at a 20-30% premium (which I understand and respect).

Since they have proven they do not have any respect for you, they will not have any respect for your property, etiher.  

With all respect to AirDNA and the amazing data they provide for STR owners, their pricing tool is not on par with most tools available there.