Although I agree with some comments here, that she could be quite annoying, and not very comically original, you'd have to have a hard heart not to have empathised with her character in "Half a Life", "Dark Page" or "Forsaken".
Then I have a hard heart. I REALLY wanted her to die at the end of "Dark Page" was was bitterly disapointed when she didn't.
And, in my view, the episodes you cite above ruined her character (If such a thing was even possible). Those episodes tried to show her in a serious light, and that's not what she's about. She's a silly character intended for laughs (and patheic ones at that), and trying to make her "serious" just made a moronic situation even more patheic.