Not happening. You aren't self supporting, you've been truant and suffer from a mental illness. All marks against you. Emancipation isn't an escape hatch. It's a means for a self supporting minor to gain the ability to be party to a contract.
How long until your 18? As it would be months before it would even come up before a judge (yes, you have to go to court) you may as well just suck it up and view this as your first lesson of adulthood: life isn't fair and you just need to get through the bad times.

