Many doubt a woman will ever make it into MLB. But if one did, do believe that she would be hated and ostracized like Jackie Robinson or are men more evolved now? Although it's 2018 and you would expect something like that may happen, I often wonder if the other players would object and treat her badly.
Some would, others would not, if she was there based on ability I don't think that most would, if she was there as a publicity stunt- like the Mets bringing up Tim Tebow, they would.
On the outside they would all root for her. Behind closed doors would be a different story. It'll never happen though, as the body of a female just isn't designed to do what a professional MLBer can do. Far to many guys in the minors to give a chance first.