Motivated seller but no contract?!

[Kamal Elqutub]

Ok, so I ran into a slight problem. I had a motivated seller contact me and say she had multiple properties that she wanted to get rid of and said cash buying only. I told her that I have cash buyers that would possibly be ready to buy the properties in cash but I would have to contract the properties. 

She stated she did not want to deal with wholesalers and said she would not sign a contract. She said we can work thing out but was just opposed to contracts. 

Would I have to double or simultaneous close these properties? Can I do that without a contract?