Kell, I apologize. The answer to the question I'm about to ask may be upthread, but I haven't checked regularly, and so I may have missed it. I'm not indifferent to your situation at all, though.
If the District Manager who wants to buy your store is the only person at this company who wants to hire you, doesn't that set you up? If he buys your store, isn't he going to leave his company and come to run the store instead? If you leave the store to go to work for the company, won't you be going there JUST as the ONE person who seems to have a genuine interest in you, without games and garbage, is LEAVING -- to come to the place where you are right now?
I may be misunderstanding this, maybe his company wants to buy your store and you'd get to run it and work for him. But if not, if he wants to buy it from your mother, is it possible that if you sit tight, you could end up working for this man right where you are right now, without having to leave?