I'm going to be honest. I don't think Ava was having a mental break or was batshit. She's an authority figure who is being questioned and challenged by the people who shes incharged of the safety and is actively taking steps to keep safe. She's trying to actually progress missions that will help them get anywhere closer to new resources or new information. And Simon and David are actively making that harder by, insisting that shes actually trying to kill him OR insisting that retrieving the sm-8's data isn't worth the risk.
Her shouting and lash outs are those of a commanding officer being talked back to and who is trying to give orders rather then a woman having a mental break or who is unstable.
Also I think some of you see a woman who shows or voices strong emotions in a non palatable way [yelling or commanding] and then take that as a sign of mental instability instead of a sign that she feels strongly about what shes talking about.













