AN: The lyrics used are from "Let Her Go" from Passenger.

Well you only need the light when it's burning low

Only miss the sun when it starts to snow

Only know you love her when you let her go

Jemma sniffed as she pulled out another tissue. She couldn't believe she'd let Skye die- she was dead, and it was all. Her. Fault.

Only know you've been high when you're feeling low

Only hate the road when you're missin' home

Only know you love her when you let her go

And you let her go

Jemma would never see Skye smile again, or hear her laugh again. And she'd never told her. She never told her. Skye would never know how much Jemma loved her, because Jemma had let her die on the operating table.

Staring at the bottom of your glass

Hoping one day you'll make a dream last

But dreams come slow and they go so fast

Ward and May were drinking away their sorrows at the bar. Jemma wasn't sure how she knew that. All she knew was that Skye had entered her life only a few months before and had left far too soon.

You see her when you close your eyes

Maybe one day you'll understand why

Everything you touch surely dies

Every time Jemma blinked or closed her eyes, she was there.

This wasn't the first time, but it was the first time with a human. Killing goldfish was one thing. Their deaths were short, and mostly painless. Skye thrashed around on that bed for at least ten minutes, heart rate escalating and monitors sounds almost drowning Skye's muffled shouts for help.

Staring at the ceiling in the dark

Same old empty feeling in your heart

'Cause love comes slow and it goes so fast

Jemma had crushes before, but not like this. Skye sometimes seemed to reciprocate her feelings. At least she was always friendly. And Jemma had never killed her crush before. All out of tissues, she grabbed another box. Skye had crept up on her like a predator in camouflage, and now she was gone, and Jemma was alone.

Well you see her when you fall asleep

But never to touch and never to keep

'Cause you loved her too much

And you dived too deep

When she dreamed, Skye was there. She was alive and whole. She would smile at Jemma and open up her arms invitingly. Jemma would run to her, run as fast as she could, when suddenly, something invisible would slash at Skye, bloody wounds going deep. Skye would scream and gasp with pain. Jemma would run faster and faster and the cuts would increase in number and Skye would scream louder and Jemma would wake up panting and sweating.

And you let her go

It was her fault.