Yes, you did get scammed... by yourself.
Unfortunately, this is just a series of bad decisions even though you spotted problems from the beginning.
Why even look at a car that you don't need regardless of how cheap it is? Do you have lots of extra time to look after a car you have no intention to drive?I don't really want or need it but find it hard to turn down a cheap car.
You should already know to get mechanic to look at it.So I look at the car and without a mechanic checking it out, suggest a price, seeing as she wants to get rid of it.
So losing a bunch of money is better than not feeling awkward?So I went through with the deal, because it would have been too awkward.
Unfortunately, this is just a series of bad decisions even though you spotted problems from the beginning.