Student or Learner
I've seen some posts that native speakers don't confuse conditional 2's future suppostion, they use "would" for unreal or improbable conditions, while they use "will" for likely conditions.
But I've seen lots of things that seem to use "would" for any future conditions, isn't the below one of them? Mom's seeing the mess is quite likely.
ex)My mom would be upset to see this mess.
Why not will?