Strangely enough, it seems that a common sentiment among players is to initially like her but then hate her once they see the stuff in the basement of her lab, yet for me it was the opposite, I didn't like her at all until I saw all the amalgamate stuff which made her much much more interesting.
Still not really partial to the character, but I find it interesting how different my reaction to her was from most.
The moment I met her I hated her. I just really don't like... I guess I'll call it 'nerd endearment'. Making the character nerdy so as to appeal to the player who is also nerdy cuz they play videogames. That's all I really got from her, 'look, I like anime - aren't I just so likeable and neat.' No, no you're not.
Undertale has some very good writing and fun characters, but at times it can come around the corner with some absolute cringe. Like that cactus joke ("the most tsundere of plants"). Ugh!
Then do genocide and get her to kill herself.
That's another issue I have with the game. Both the pacifist and genocide endings aren't endings you can naturally get to without looking it up online. There's this smarmy 'gotcha' element to it that without a guide you have very little clue about. It's like those pranks pulled on random passer byers who have no idea they're part of a prank, but then they get laughed at anyway. Stuff like that kinda annoys me.