She usually has an opinion about whatever subject/topic/issue is 'under discussion'. [=being talked about]
The proposal is 'up for discussion' [=the proposal will be talked about] at today's meeting.
After much 'discussion' of the plan, the idea was rejected entirely.
(..) out of there. - How are we gonna get outta here now? - Leave it to me. We're checking out. But it's not big enough for you. It's barely big enough for me. - We said no discussion. - No, I'm not letting- - I'm not going! I won't go! - Listen to me. We have no chance together. (..)1994 Léon: The Professional
(..) with real bullets now? Not today. Let's pack up. Like that. - No, thanks. - No discussion. It seemed... to Socrates- I'll do it. Leon, all we do is work. We need a break. (..)1994 Léon: The Professional