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.
(..) All right. Oh, good! Okay. Oh, no! I have to go, because I'm late for... ...my "Green Eggs and Ham" discussion group. Tonight, it's "Why he would not eat them on a train." - Have fun! Bye! - That was so lame. I know. (..)1996 TvShow: Friends Title: The One Where Dr. Ramoray Dies Season: 2 Episode 18