I like the character. She was somewhat flighty and superficial, but she was the girlfriend Matt Murdock had with the first issues of Daredevil I read. She was a party girl, but she was otherwise a fairly good-hearted character.
Then it seemed everyone else dicked her over. First, Matt Murdock got her to lose her company so she would feel dependent on him. When that worked and she had nothing left, she accepted his marriage proposal. Then Foggy Nelson and Natasha Romanoff conspired to destroy their marriage by faking letters to each other. So they split up and she became a drunken mess (she wasn't innocent during this time, she did drunkenly reveal Matt's secret identity before Karen Page did it for some heroin). But the reason she was like that was because of Matt, Foggy, and Natasha. In this state, she kept trying to get attention calling Matt for help. One time, he ignored her. Unfortunately, at that time, she killed herself in a death he could have prevented.
The whole thing was tragic. I think she had a good full storyarc, though, so I like the character.