Reaction is optional
Reaction, immediately, follows an emotion.
Just now I got my thermo-flask (which I used, almost, every day) shattered. I immediately felt sadness, regret and a bit of anger.
And right after I:- begun planning to buy a replacement (as a way to appease myself).
- started explaining to myself, how it was, probably, for the better.
- tried to convince my self that there is nothing to be sad about.
- ...list can go on, but I think you got the idea =)