Honestly i think that people don't talk enough about how Chica and Freddy genuinely care about each other
I know that fandom decided to accept that she hates him too (which is really meh,it doesn't fit her character) but like,what about these sweet little interactions/mentions they do have in canon?
She looks really concerned when he starts malfunctioning
And she's the only one animatronic that checks on him, after he falls. You can see that she runs to him from the side
One message that you can find in the game mentioned that Freddy falled on the stage on kid's birthday, way before game events
Possibly Chica even knows about this...
Worth to mention that Freddy doesn't recognize Roxy's or Monty's upgrades, without Gregory giving hints
But he does know that voice box upgrade is Chica's
And he sounds really worried/concerned about her
After Gregory states that she's still functional, Freddy says "That is a relief".
Imagine how worried he was from the thoughts that he won't see her ever again, just like Bonnie...
Also talking about Bonnie, Chica has a bowling ball in her room, too. Just like Freddy does.
Fact that she doesn't talk about him or about Freddy directly, doesn't mean that she doesn't care (she's not herself at all bc of the virus)
In general, Freddy, Chica and Bonnie are pizzaplex's OGs. They performed together, most likely attended the parties and interacted outside of "work" hours
According to "Freddy & Friends : On the tour" cartoon, these three always were supposed to be close friends with an inseparable bond, that always stick together, no matter what.
Chica is not competitive. There's no reasons why she'd want to outshine Freddy.
Aside from her obvious character traits, she would probably be closer to a "mother hen". In spite of scary behavior, most of her lines about wanting to take Gregory to his parents and she convinces him that he is "safe" with her
She's not trying to scare him on purpose. And she doesn't insults him
You know, the real chickens are very hyper-parental (and also they check if their chicks eat & drink through day) and this time the animatronics have more animalistic traits...
If she wasn't under the influence of the virus, she'd probably be a good protector, it's literally in her character. Even the weakest hens are willing to fight for the lives of their chicks.