Poor Faye is really confused and upset, isn't she? As has already been said, even the hint that she might be
actually attracted to Bubbles is enough to trigger her old defensive violence response! I don't think that it is as much unwelcome as it puts her ill-at-ease. She's sort of found a comfort zone, a bit like Marten has a few times; she's understandably unhappy to be forced out of this.
I can see another reason why Faye may find her reaction unwelcome. Let's say for a moment that she's just feeling an 'itch'. If she misinterprets it and does something that she doesn't ultimately want to follow up, then she'll hurt Bubbles. That's something that she wants to avoid at all costs.
FWIW, I don't think Faye is sure right now
what she's feeling. She needs to sort that out before she does anything else. In order to do that, she has to accept all the realities
that she's been brushing off. That's going to be hard. As I said yesterday, it's going to be especially hard given how badly all of Faye's romantic relationships to date seem to have foundered; she might be afraid of those feelings and desires now.
Faye treated Momo like an object twice that I can think of. There was tossing her in the air like a toy, and there was looking up her skirt.
Regarding objectifying AIs, I've said this before but it deserves to be said again: Up to comparatively recently, AnthroPCs
were objects both in a legal sense and how they've been viewed by society as a whole. So, Faye isn't really unusual in her reactions to them.
It is my view that a major part of the entire Faye and Bubbles arc has been Faye becoming to see the person behind the plastic, something that she's never had to do before because her limited interactions with AIs, even with Pintsize, only
reinforced her 'not really people' reactions to them. Being in continual close contact with Bubbles and the other synthetics at the Skate Park for day after day for many months allowed her mind to start perceiving the person rather than the machinery and, over time, she almost forgot she was a synthetic.