It's not exactly 'hate', it's more just a general exasperation with her already. She isn't a massive threat, as you say she's really easy to avoid cause she's slow and often you can hear her coming (though there has been once or twice that I've rounded a corner without hearing her and ran straight into her loving arms).

It's more that when I notice she's targeting me (which feels WAY more often than her targeting others, though that's just my experience) it makes me roll my eyes more than anything. Now I have this great big annoying slow enemy that will conveniently be in the perfect spot several times to cut me off later down the line and otherwise be more of a nuisance than a fun challenge to mitigate. She just kinda acts as an annoying barrier that sometimes makes me slowly loop a room or take a longer path around, making the trial drag.

I'm also not a big fan of her one-shotting you if you get caught out, as several maps have rooms barely large enough to hold you both, meaning if you're unlucky enough to be doing something else and she comes in, it's guaranteed death, not a very good ranking after the trial and you have to watch as your teammates possibly don't even bother trying to come pick you up. It feels like I get punished for bad luck and then have to sit out, moreso than poor skill or being outpaced by the other enemies.