Got my first contract now I need help finding a buyer

[Brandon Paisley]

I have just launched our wholesaling business with my brother/partner, our company name is Ultraviolet Properties. Just after two weeks we got our first contract! So we started marketing to sell the property, we've listed it on craigslist, put up bandit signs, and our website [REMOVED] but only a couple of calls. Well so far I'm not too worried but the seller is 86 years old and has called me 6 times wanting to know who the buyer is. After I explained the process she's all bugged out now.
My issue here is that the house is a few counties away and I don't have a buyers list. So how can I get some traffic to this property and most importantly get the house sold? We've done our due diligence we got it under contract for $21,000 and were asking $35,000 its ARV is $79,500. It is currently being rented for $900 a month so we are marketing it as an income property although the renter is leaving in two weeks. Its an hour and 20 minutes away in an area that is historic but partly run down and sort of a rough neighborhood
Should I ask realtors in the area of the property to find a buyer and if so how would I pay them? Is there another way I can market this property to sell? Whats the quickest way to sell this property??? Any suggestion would be greatly appreciated!