You are mixing a lot of things and distorting them. He didn't fell out with PSG a couple of times, the first "story" is one where he asked to be loaned because as a very good 17-18 years old he wasn't playing enough, there was no fell out. The second "story" is again PSG low balling him while giving big contracts to lesser players, he rejected their offers and Henrique eventually stated that Rabiot had to chose between accepting their offer or being sent to the reserve(which is illegal in France and LFP sanctioned them), PSG are the only ones that acted poorly.
The club story is also not one, PSG had already ostracized, they also did something that some of you conveniently ignore. They used the death of his father and grandmother to sanction him and ban him from the team, he asked to not go to Doha in order to attend his grandmother's funeral, the club agreed and actually made a public announcement, a few weeks later he was fined and banned for not attending Doha's training camp which is the context of the hostage comment, because PSG's behavior was an attempt to force Rabiot to extend if he wanted to be treated normally, it had nothing to do with Juve. And she was 100% right.