Beautifully written story. You have captured Sam's voice perfectly. Sometimes you also found ways to parallel Sam's experience to Frodo's, nicely done. Particularly at the end of Ch. 3, when he said: "Too many secrets, too much trying to protect others - it just scoops the insides right out of you. And my heart feels so hollow..." Perfectly Sam, but also so much of Frodo.
When Sam said he wished they had fought a dragon because it would've been easier, it was quite touching. In a few simple words you showed how much they suffered and lost.
Perhaps my favorite line came from Frodo's 'speech' to Mr. Palladin, trying to explain what Pippin went through. When talking about Sam, he said, "He held my hope for me when I was too weak to carry it for myself." You captured their relationship, their situation at the end, completely. I don't think I've read it written just so.
An absolutely precious story.