Yes, she can "slip" free.

Her feet were still on the ground, meaning she still had some form of leverage. She tried to step backward to pull herself free, but found the plant was not letting her go. Its mouth held her tight. She stepped another way, and she felt cool air on her thighs. Almost as if to fight her more, the flower let out more of it’s warm, slimy substance, spraying her body. She could feel it running down her legs.

“Ugh, stop that!” Mackenzie hissed as she wrestled for her freedom. She kicked her shoes off, abandoning pricey footwear to find a better stance. As much as she didn’t like the feeling of this warm, oily slime, it was working to her advantage. Mackenzie gave one more firm tug, and slipped.

“Come… on! Let… me… goooo?” The warm embrace of the flower released Mackenzie, letting her slide out of the flower and tumble into the grass of the garden. It then uprighted itself, a little dribble of the oily substance falling to the ground.