They weren't there when Barry told everybody about Flashpoint but i think Thea didn't get angry but Mick yes
Why would Mick care? Same with Thea, she wasn't aware of half of this stuff until now.
Everytime i write fanfiction stories set during that episode i always make Thea not being angry at Barry but Mick yes
Again, why though? Mick uses time travel to go on beer runs. He's not going to care.
Because i actually don't know too much about how the characters would react in a situation like that
Got to do research if you want to accurate represent characters.
What do you think?