I agree. A few additions...
Caroline was injured so she got no publicity, or chance to show her game, during her injury. Her senior year, fully healthy, she shot up the rankings in several services. HG ended at #5. PN at #11, Blue star at #7, ASGR #9, World Exposure #14. So you are correct - to say she snuck up on anyone is incorrect. Maybe she "snuck up" her seninor year coming off injuries. But every single service had her as a top 15 kid.
Now I'm all for a kid having a chip and feeling the need to prove oneself. I hope Caroline doesn't get caught up in that too much - maybe for the first part of the season, but just go out and work your butt off and show that you are an elite player. Period. Play with an edge. I'm all for that.
I think the sneaky stuff came from Geno. That she does things maybe he didn't know she could do.
I think (IMHO) the reason some UCONN fans refer to her as a sleeper is that almost all the publicity for the class surrounded Azzi. The "next great thing". From that perspective, not a lot of fans were talking about Caroline. ESPN obviously mentioned her in their ranking our class #2 behind SC:
Fudd, a dynamic playmaker, is the second No. 1-ranked prospect the Huskies have signed in as many years, as UConn also landed Paige Bueckers in the 2020 class. Fifth-ranked Caroline Ducharme is one of the most improved players in the country heading into her senior campaign. F Amari DeBerry, the No. 15 prospect, has a skill set similar to UConn's Olivia Nelson-Ododa thanks to her elite size, length and mobility. No. 30 Saylor Poffenbarger is a versatile guard who has 3-point range and size to post up in the paint.