Office Trainee [FL]

We have a new office trainee. She is training in estimating job sites for our department. There is 6 of us that go onto the job sites for what we are trained to do. However this new trainee came from the field herself and has done nothing but talk about people behind their back and even had an employee removed from our department over gossip and false rumors (That has had nothing to do with their job performance) without evidence. Personally I think the person who was removed should go to HR and file a lawsuit of discrimination, unprofessional conduct, and harassment. This trainee is starting to make others uncomfortable on top of not focusing on what they were hired to do but gossiping with our supervisor who also should not be in their roll at this point since they didn’t shut any of this down or look into it and only reacted on verbal sources. I’m good friends with the person removed and we made a time line of all the things they were accused of which is all personal life stuff and found that it’s a lie.