Sounds like she needs more practice but it would be nice if she didn't get it on you? I would be frank the next time she used a word you didn't care for, point out that "dysfunctional" or "disordered" are not feelings but descriptions and "disoriented", while it can be a feeling, is more appropriate to lost hikers or people who are feeling faint? But I don't see how you could make it work; it is not your job to teach her and I would feel resentful having to correct her and try to make it work with her; it doesn't sound like "accidents" or something she could correct easily but like she needs a whole lot more classroom training and practice with professionals correcting her.

I would write a letter to her supervisor/the clinic head and explain the problem to them and ask if you can try another intern without there being an embarrassing confrontation with her or, I would save up some money, try therapy in six months or so, see if you can think of a plan of attack on what you're wanting to work on and see a professional for a short period.