It's like a back handed compliment. She's trying to express interest without putting you on a pedestal. Like she's interested, but a guy like you she normally wouldn't give the time of day, so consider yourself lucky, I guess...
I had a woman once tell me on a second date that I wasn’t her type and she usually dated more attractive guys. I ignored. I was facking her an hour later and ghosted her ass. Don’t pay too much attention to what she says, Always follow her actions.
The key word is normally. She was showing interest, so why did you bail instead of asking her out?