Do you think I'm ready to make nice?
While there's this burden breaking my back?
^^^^^
You might want to lose the first question mark as both sentences connect together.
while you still refuse to let me heal?!?
^^^^
The extra punctuation makes it feel more like a rant and vent. It might be but it makes the poem have less impact.
Congrats on using punctuation! I've read too many poems where there weren't any and this just made it stronger. The poem in itself was heartfelt and emotional. You have some nice imagery mixed in with more like a narative to create an exqual balance.