Ah the 90's... the cartoons might have been awesome, but the comics sucked... At least from what I can tell, I got into comic books in the late 90's/early 2000's. The cartoons of that decade were (for the most part) WAY better, in my opinion.
This is an excellent example of a good idea being totally screwed over, making the story more and more insane until no one has any idea what's going on anymore.
If you want a more detailed look at the Clone Saga, either visit the "Life of Riley" webpage, or watch some of Linkara's videos, he has some interesting viewpoints and information about this event.
Apparently, at one point they thought of bringing Mephisto in to end it, but rejected the idea, as he wasn't part of the Spider-man continuity.
...Yeah, hindsight's a ***** ain't it?
I do want to read more Spider-Girl, though, but I'm not sure where to look. I was lucky enough to find a small collection book in a book store several years back, but haven't been able to find any others since...