AITAH for refusing to help a stranger on the street because I felt they were scamming people for money?

I was walking to my car when I saw a woman standing by the entrance to a store, looking distressed. She started walking up to people and asking for help, saying her car broke down and she needed gas money to get home. Normally, I’d probably be more sympathetic, but something about her didn’t sit right with me. She was too calm and well dressed for someone who supposedly just had a car issue, and the whole thing felt rehearsed. I saw her approach a few people, all of them giving her small amounts of cash, but she kept asking for more.

When she came up to me, I just said, “Sorry, I don’t have any cash on me,” and kept walking. But as I did, she called me a jerk and said I should have at least offered to help in another way. I felt bad for a second, but then I realized that it could be a scam. I wasn’t about to be part of something where she’s probably running the same line on everyone for free money.

A bunch of people on the street were falling for it, and I couldn’t help but wonder how often this happens. I feel like it’s on me to be cautious, but at the same time, I feel like I might’ve come off as rude. I’ve read enough stories about scams to know better, but was I wrong for not doing more to help or at least offering her some other way to get assistance?