When a nightmare depicts her committing a murder, an insecure paramedic must make questionable decisions at work to avoid her fear of the nightmare coming true.

I think it's a very interesting concept, just add a few more details and make the logline a bit clearer. Will "the murder" she commit be at the hospital, and that is why she's making questionable decisions?

Who is she murdering?
Why does she believe the nightmare?
What questionable decisions?

Haunted by nightmares in which she murders the man she is engaged to marry, a woman struggles against the growing urge to make the dream come true on their honeymoon.
(30 words)

Or some such.? My general points are that 1] There's more intrinsic conflict if the victim of her nightmares is the person she? loves most in her waking life, and 2] There's the ticking clock (in this case an impending marriage) to heighten suspense.

Whatever.? I think its a raw gem of an idea that has the potential to be an interesting psycho-drama.