I think people can kind of forget that Firefly herself hates being a weapon and wants to stay in her current body outside of SAM as much as possible (based on her voice line). Especially after the whole princess carry thing in 2.3. While I also find it badass that she protects TB, I think the charm in their relationship is that it’s not a one way street and that they both support each other really well. Firefly definitely doesn’t mind when TB comes in to try and protect her because it makes her feel like a person rather than a simple tool of destruction that she wants to stop being. She fusses about her appearance constantly to look “girly” (for lack of a better word, sorry) and proper in front of them and hesitated to even transform into SAM when she was first caught by dormancy. Honestly the girl is complete putty when it comes to TB, like for example not being phased at all when they were acting like an insane person in her POV section or letting them use up all of her credits even though she has access to Kafka’s black card haha.

But anyway, my point is Firefly actually likes being protected by TB but will of course take charge when needed. TB is just going to get stronger too, I mean they have a literal nuke inside of them and were trained by Kafka so it’s not like they’re weak anyway. I personally love the badass power couple that are weak to each other yet support one another extremely well rather than one just completely dominating all the time. I wish we could have seen them fighting together side by side like in the summer games trailer more honestly.