[jmil1974]

Get all your money in your posession ASAP.
Unless she is paying for it, go to school where you think and feel is best for you.
Make the truck disappear for a while until thinkgs blow over.
Be patient and understanding, I also know she's not acting like herself right now. I suspect that regardless of religion, she'll apologize for this down the road.
Parents have a right to encourage their kids of any age in certain directions. Money and things are a perfectly legitimate tool for that. However, from what you've told us -- I do believe her method is inappropriately harsh and cold for where you are in your life and where she is in hers. She needs to work out her frustrations with your dad, not take them out on you.
Keep your truck, keep your head, keep your empathy, and keep the moral high ground.

Good luck!