She thought wearing a sexy outfit inside her home would have been a nice idea... she didn't realized even mosters like hot women... if it is a intelligent creature it will "use" her body before devouring it
The new Anaconda series has that kind of theme, starting out with missing dogs in the neighborhood due to a giant snake that a girl investigates by going door to door and stumbles on the handler's house and gets chloroformed and bound for knowing too much that she becomes dinner. Then there is a cheesy Wunder Woman you get paralyzed from Dr. Death who injects venom and has his way with her as she is paralyzed but aware and helpless then fed to the snake.
Something you may want to try for tentacles: Taper the limb. They are thicker at the body. Then inside each tentacle, have 6 to 10 inch length tubes (maybe 1" in daimeter - change diameter over the length of limb) with an inch or two space between each piece. Attach a flat flexible piece of plastic strip 1"x 6" on one side from tube to tube. At the tip of the tentacle attach an internal rope which runs all the way through and into the creature. By pulling on the ropes you can then curl the tentacle around the subject. Make sure there is foam padding around this skeleton. you could also use thick clear rubber hose with 3/4 sections cut out every few inches to make a similar skeleton.
That way your monster can keep a grip on its meal.