She’s broken, but she’s not. Her character is very well balanced for the PvE segment, and for PVP it shouldn’t be too much of a problem to handle her. She’s really easy to control, especially before she gets her ult up.
Just remember, CC is your friend. Her biggest weakness is that she absolutely has no real crowd control. If she throws her shield she’s left twiddling her thumb and waiting to die. I’ve seen a good marquis slam galilea against the wall every fight during team fights, it’s just a matter of patience, and team work.
Now why I say she’s still broken, is that like boldur, she can control group fights incredibly well if no one has stuns for her. If she walks over a ghalt trap, GG she’s done for quick. If she throws away her shield and misses, GG she’s done for quick. There are so many situations where she is out of the fight in a few seconds, and it is on the team to make sure she hits one of them. Too many times when I PVP people pick characters like Shayne and are surprised when their first engagements go poorly against a well balanced team with 4 aoe stuns.
To put this in perspective: Complaining about Galilea in battleborn is like complaining about Drow in Dota because your team is entirelyi made of ADCs.