This is a really good time in your life to learn how to fend for yourself financially, so I second the suggestion to find a job (colleges often offer on campus work to students) to fund your own therapy. You may also consider looking into insurance plans especially for students- they can be less expensive and offer mental health benefits. However you do it, you'll find it incredibly freeing compared to the controls you've been used to as a minor. As long as you're using your parents to fund your therapy, there are going to be constraints, whether emotional or practical or both.

Remember, now that you're an adult- they can't refuse to let you see anyone- you just can't force them to pay for anyone. I know it can be an odd transition to think like that, but I hope you'll find it empowering with time.

Good luck working through this- I agree with your instinct to stick with T3 if you can. Along with trying to fund it yourself, can you ask if she offers a sliding scale for students or income-based sliding scale? Therapists often will if they're able.

P.S. I just realized T3 is 6 hours from college. That does seem really impractical, unless you would be able and willing to do phone sessions or something to supplement in person visits. There are often therapists in good numbers around college towns/centers. You may want to consider interviewing a few- I know you disliked T2, but it's likely there are more "T1" and "T3" out there also if you'd like to see a great therapist while you're at college. I'm not familiar with successful therapy that's done just during school breaks, but I suppose I could understand it if you're looking more for a workshop/weekend intensive type experience and don't want to have an ongoing connection... because it will be really difficult to maintain one if you just see a T during summer and holiday breaks don't you think? At any rate, an occasional therapist should be easier to save money to see, no matter where you see them.