Molly's website: http://molly-quinn.net/
Molly Quinn Imgur photo gallery: http://imgur.com/a/TjBxE
Stashed in: G4!, Best of Imgur, @nathanfillion
Molly Quinn plays Alexis Castle on Castle.
Here's some mid season 6 promos: http://imgur.com/a/HYpg7
Images below are from Reddit and Imgur.
Here she is with her dad on Castle, Nathan Fillion, at Comic-Con:
Molly Quinn clip from Castle S5E06: