She doesn't need to ask herself any further who or what.
That place hums with the Light Side energy. It is almost deafening, very much like the myriad of sounds and murmurs produced by the forest. To a layman, it is an unnerving sound. To her, it's like listening to a symphonic orchestra tuning before the concert.
And to him… to him it is like the tolling of the bell. Funeral or not, he cannot tell yet.
It doesn't harm him, but it makes him languid and distant. His ferociousness from Coruscant is now gone, drained through him like water through the sandstone.
Rey first suspects he is hurt – miraculously, he's not. The blood on him is for the most part someone else's. He has a couple of flesh wounds, but they do not slow him down.
It's the planet.
He sits there in silence, on the hard ground that rims the swamp when she approached him.
"Help me salvage the ship".
He looks up, his eyes distant. She removed her cape and is now standing, towering him, hands on her hips. Sheer determination – not a moment to lose. She needs the ship to contact the others. She must know what has happened to them.
The ship is drained (very much like he is), but she'll find a way to patch through to the Resistance. And to bring him back to – life, she supposes. He was dead even before they tried to bury him.
After all, she is a scavenger, accustomed to survive on the bare minimum.
But Rey can't do it alone – lifting 2 tones of awkwardly placed rocks is not the same as lifting 20 tones of heavily armored battle ship submerged in quick sand.
Rey discarded her stained green cape and stands there, arm wrappings and sleeveless shirt letting her strong shoulders show. There is also a faint mark where that wound from the Throne Room was.
She is probably the only being in existence he would obey, so he comes with her.
"Your Master couldn't do it himself at first, you know", Ben says with that hint of dark humor permeating his voice.
She doesn't know this and realizes he is sharing a family memory with her. (Luke visiting this place doesn't come as a surprise, either, given the presence of the Light Side here.)
Great effort from a man dead-bent to let the past die: that, and the fact that they managed to escape, makes her smile.
"It's good that I have you here, then", she says.
He raises his eyebrows.
Is it?
But says nothing.