I haven't really read the issue where she died, but I'm not sure if bringing her back was really necessary. She's a human character, and characters like that usually stay dead (Think of Gwen Stacy, Karen Page, etc.), so I say that she should have stayed dead. And didn't they turn her into Harpy or the Red She-Hulk after that? I also think that her coming back kind of diminishes the relationship and enmity between Bruce and Emil (The Abomination.). And Ross and Emil too, for that matter. The "Dear Betty." storyline in Hulk #24-#25 is the perfect example of the two truly having an arch-enemy relationship. Does anyone know if PAD intended for The Abomination to be her killer? I heard as much, but I'm not sure what he had planned. It certainly gave Emil a step-up. So, I would say that she should not have come back, but it seems that a lot of people weren't too happy with her dying the first place.
I was never happy that Betty was killed off to begin with. I felt it was such bad timing when Banner and Hulk were right on the verge of working for the Military if I remember correctly. That could have been an interesting story. Right after Betty died and PAD left the book went right down the toilet with horrible story lines for awhile. Killing Betty was probably the worst thing PAD did besides The Savage Banner. I am glad she was brought back and I really enjoyed the Red She Hulk. I know she was brought back at first by Jones. That was the only good thing Jones did.