Do I have a subject to deal? Need Help

[J Smith]

Here's the situation. I was contacted by a motivated seller who wanted to sell ASAP. Its owner occupied and she owes $95,000 on a $105,000 mortgage that she took out in 2013. The ARV of the property is $140,000 hard. She is current on payments and taxes. Her mortgage payments are 700/ month and homes that are 1500sqft rent 1200/ month.The property has $25,000 in repairs. (Roof quoted at $10,000 by a local roofing company and full cosmetic repairs quoted by a local contractor to be $15,000. Landscaping not included but that's fine.) She doesn't want anything and just wants to get out of her deal. I was thinking it might be a subject to deal and whole sale it down the road. I know absolutely nothing about subject to. I know the premise but what contracts/ documents are needed? What are the not so obvious risks of subject to? Can anyone recap their first subject too deal? Is it as strange and scary as it seems or am I over thinking it.