Hi and welcome to PC!

Is simply not giving your opinion truly being passive/aggressive? I think you are just being passive. The aggressive part would be if you then did something to take it out on her while seeming so innocent.

My husband is/was passive/aggressive. I am mid-divorce with him right now. It was a 20 year long struggle over the same thing.

Maybe I should have been more outright aggressive to make him stop his shtick. Instead, I cried an ocean and developed a mood disorder over it. If I had seen through him and trained him like a dog to exhibit the behavior I wanted, maybe we would have been better? Instead, the pain it caused me bore severe depression. He defeated me. He knocked me down. THAT was passive/aggressive.

Nah, if I had to be a dog trainer, who wants a lap dog? No good either. Nope. No good scenario to two incompatibles.