Sporting striped overalls and a messy bun, the 29-year-old showed off her trendy, black-rimmed glasses.
“Inside my mind,” she captioned the post along with a magnifying glass emoji.
A few days earlier Sam shared a hilarious video with her co-star Jake Ryan.
In the video, where Sam and Jake quizzed each other on how well they knew one another, the actress struggled to keep a straight face alongside her on-screen partner.
Our attempt to do a quick Q&A when I was delirious & caught the giggles. I may be driving Jake insane, but I personally find myself quite amusing," the 29-year-old wrote.
In the short clip, the duo poke fun at each other's off-camera quirks.
"Sam thinks she's a good singer but she's tone death," joked Ryan, who plays bad boy, Robbo.
The former Bachelor star was cast as stunning Summer Bay nurse Jasmine Delaney in December 2017 and has gone on to become a fan favourite.