She doesn't represent the district. She picked it off a map, while living in (I think?) DC, hoping to replicate what AOC had done in New York --- knocking off a geriatric institutional Dem in a safe blue district. What really got me was that she moved to Chicago to run for CD9, and
didn't even move to the district --- she moved to the Gold Coast (IIRC?), far outside CD9 (which is Rogers Park, Evanston, and the near north suburbs).
There's a word for this (carpetbagging).
Then more broadly there's the question of what a Representative is for. Is it "designated protester for the district"? If so, she's the leading contender. It's my belief that "most effective on-site protester" is not in fact the job of a congressional representative.
It'd be one thing if the choice was between Kat Abu and a staid machine Democrat. But CD9 is naturally progressive, and she's up against Daniel Biss, a progressive with a real track record of getting things done (and unquestioned ties to the district). What I think she's really going to do, best case, is split the progressive vote.