Friend wants out of Unintended Rental - How can I start the convo about selling?

[AJ Romero]

My husband and I have made the decision to start purchasing nice SFH rentals in our area to eventually fund our retirement. I haven't yet figured out how we are going to advertise to family and friends, but during a recent Facebook discussion, it came up that a friend who has moved out of town wants out of her house that she is now renting out due to an inability to get their desired sale price. I don't know the particulars of the property or the numbers she expects -- just want to know how to approach her about possibly making a deal.