We don't know why Samantha was dreaming of Kara's mom at the end of Supergirl Season 3 Episode 1, but we can tell that the dream shook her. What does it mean?

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Photo Credit:
The CW
Show:
Supergirl
Episode:
Supergirl Season 3 Episode 2: "Triggers"
Related Photos:
Supergirl Photos, Supergirl Season 3 Episode 2 Photos
Location:
Vancouver / Burnaby, BC, Canada
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Supergirl Season 3 Episode 2 Quotes

Winn: I thought you couldn't read Kryptonian minds.
J'onn: I can't, but I can scan her mind for residual psychic activity.
Winn: Remind me to get you a "world's best boss" mug.

Winn: I don't think I should get involved.
Maggie: Because you're on my side, aren't you?
Alex: Oh yeah, right.
Winn: Well...
Alex: What? Wait, I saved your life!
Winn: Yeah, but like so has everybody else here.