If she is motivated and has no other offers, she'll accept.

My first assumption remains the same.When I make mistakes and I do being human, I admit them, this is not necessarily one of them, I understand your point (and perhaps your motivation) but without more information by the OP, I'll stick to my suggestion.

Also, look for subtle things on the outside of houses because you may uncover a seller who is motivated to sell for reasons other than maintenance neglect suggests. 

Fortunately I’ve got that.face to face; Build rapport - Upfront agreement - Motivation - What ifHave started looking again at we buy houses folks etc in my farm area, the list I finalized 2 weeks ago.. already there's 4 llc’s gone all lines disconnected.

I will not be going it alone, so the motivation comes from opportunity cost of lost leads.

A lot of times when people call in they are not necessarily motivated to sell at our price, but do want to sell.

If they were not ready to make a decision, what was it about your letter that would motivate    5 out of 25 people to call you?

Box" then I doubt there's much motivation.

Out of the other half, maybe 1 will be motivated.  

Since it is overpriced and you haven't clue if the owner is motivated why are you bothering?