Paz was crossing a line. You generally don't get to tell your love interest's friends to go away, even if you think they're bad for her. She's also ignoring that Kat has her agency and the right to make choices, even if Paz feels they're bad ones (I'd disagree, since Kat is trying to save the robots from losing their self-identity and is working with Annie to keep the court safe from Loup).

However, Paz at least thinks Annie is actively involved in creating these problems, so there's that. She sees herself as going protecting Kat from Annie's abuse rather than recognizing she's just stepped into semi-abusive behavior (trying to control Kat and get rid of friends of Kat's she doesn't like).

It's also interesting how things have changed. When we first met Annie, she befriended things that most people would find terrifying (a minotaur, a ghost, Rey in a dragon-like body, Rey in his new body after Annie knew he'd tried to possess her, etc). They responded with apparent friendship.

Now, Annie's older and the world isn't that simple. Coyote's friendship was always potentially dangerous and Loup's is downright psychotic. People Annie knows are angry or afraid of her.

While it's hard for Annie, I like how things are changing as she grows up and are becoming more complicated.