I think you're getting the Faye of the first thousand comics or so confused with the more recent Faye. She's in a stable relationship, she's been a good friend to Marten and Dora (and maybe others), she's cut waaaaaay back on the drinking, and she hasn't punched anyone since knocking offensively drunk Marten down several hundred strips ago - and those were unusual circumstances.
What I'm getting from your post is that you see Faye as more a more likeable character in recent strips than in older ones. I don't take issue with that, but it is an interesting point of view from my perspective. You see, when I started reading the comic I did the obligatory archive-dive and developed a fairly strong fondness for Faye as a character. In retrospect, this was almost entirely because the first 500 comics were set up as a pretty traditional romantic comedy with Marten and Faye as the primary characters. I wanted them to get together, and when they did not I was actually pretty disappointed.
Once that passed, the strip introduced a much larger cast of characters. It became less of a single-arc strip, and I came to enjoy the secondary characters a lot more, in time. There's one or two characters I really don't like, or I feel have been mishandled, but QC has a good cast. These days I don't feel like Faye is a likeable character at all, though. It actually seems to me like she was
more likeable in the older strips. She was emotionally damaged, and that caused her to act in some unpleasant ways (like hitting people) but on the whole I felt like her basic character was more sympathetic. She was a good friend to Marten in spite of everything she was going through. These days... it's been a while since she had a story I actually enjoyed. She seems to have a much harder edge these days. She doesn't seem very nice.
I'm not trying to make the case that you're wrong and I'm right, but I definitely don't perceive Faye as a nicer character these days. Her portrayal was on an upwards trend for a long time though. During the time she was getting together with Angus, she was very sweet. I don't know if it's just my perception that she's become less pleasant since then...
I often feel dissatisfied with the way that characters in this comic don't maintain a consistent personality. Individual strips and arcs are generally satisfying, but in the long term character development is weak.