Am I being racist?

So I just want to start by saying I'm a white privileged girl so I know I'm not always racially and culturally sensitive.

3 years ago I was walking to my car from a gas station because I had to pay inside. I noticed a Hispanic man knida eye balling me and he even followed me out from a distance. I got back to my car at the pump and saw a note that said "your back tire is flat" I looked up and saw the same dude staring at me from a van that had other Hispanic men in it. Anyways, I got the hell out of there and the van started following me. I called the police and they were pulled over but they couldn't prove it was some kind of kidnapping scheme...but I will say my tire definitely wasn't flat.

I've bee really struggling with anxiety since this happened to the point that I didn't get my own gas for a year. (My husband always made sure I was filled up) and I get nervous when I feel like a Hispanic man or men are staring at me or driving behind me. I started to go to therapy recently because this has been going on too long and my therapist said that these feelings aren't because of what happened but because I'm a racist deep down and that the event just brought it to the surface. I don't feel like I've ever been afraid around Hispanic men prior to this but she thinks I probably was or at least extra aware of their presence. It's a hard thing to hear that you're a racist so I was about to cancel all future appointments with her, but I started to wonder if I'm having a knee jerk reaction. Should I keep seeing her?