No!

[It comes out without thinking, and she suddenly throws herself at Lena, clinging had, as if physically trying to prevent her from 'blinking out'.]

You can't! You won't! You're here, they have to keep you here!

[She's not sure if she's making sense, who the hell is 'they', but now she's just so deep in fear it's hard to think straight.]

I won't let it happen! I don't care if you keep a million secrets from me, I'm not losing you again!

[Well okay, she WOULD care if Lena kept a million secrets from her, but that's beside the point, kinda.]