Sadly, I don't think it is. There's nothing in the post history to indicate trollishness.. and usually there is. But there's always a chance that she's just found a love for trolling.
OP, if your serious.. I just have to say that may be the most ridiculous claim I've ever heard. My name is Wendy.. I don't get insulted that Wendy from Peter Pan is bossy, or anything else that another Wendy may have going on. They aren't directly related to me in any way. [NPC] Carl is not made as a persona of your fiance. If you guys are seriously offended by it, you both are way too sensitive.
Actually in your case, I think the name Wendy originally came from Peter Pan so you are related in a way. xp
@OP: Almost every character in anime I've found named Anne is either dead, a villian or been kidnapped maidens. This doesn't offend me, and no I don't fault those series for portraying people with my name as evil kidnapped corpses.
Yeah, it did come from Peter Pan, so perhaps there is the smallest correlation. But I'm still not insulted by it ^_^
Are you also offended by cats, dogs, birds, chickens, ducks, fish, turkeys, possums, racoons, monkeys, giraffes, lions, cheetahs, bears, pandas, polar bears, jaguars or other any other animals that are named "Carl"? That's the only way I'm gonna call this a legit complaint.
Maybe the OP is trying to make a point about Derpy Hooves from MLP? And is protesting the name change? Although it's an awfully roundabout way to protest...
It's the only thing I can think of. A person or character's name simply should not be taken offensively. Unless such offense is deliberate-- like if someone named a character "N----rface" or something.
Carl Winslow from Family Matters: Not a stereotype, but has strengths and weaknesses, and is an awesome character. Doesn't create male sexism that way.