Discovering a body in the sandy soil was prevalent on Jakku. Rey wasn't aware that you were a body till she moved closer and found you baking in the setting sun. You had obviously passed out, presumably due to dehydration from failing to bring a canister with you. Or perhaps you were dead.
No, you weren't dead; you were still breathing. Honestly, Rey wasn't certain if that made things better or worse. She certainly couldn't carry you all the way back...So she dragged you instead. Although she didn't expect you to wake up with a gasp. Rey let out a startled yell, her hands promptly dropping you back onto the sand.
Which only released a groan from you.
"Sorry!" Rey blurted out. "Oh, my Stars, I thought you had died! Well, obviously you are not, but-- Kriff, are you okay?"