Could be a small prolapse thank goodness, you can deal with this, keep her quiet with food and water and keep her bum slathered in something to help heal. but she doesn't need to lay any eggs right now till this heals. if there is something protruding out that looks like it should be in take your finger with latex of some kind of glove like that and put some KY or Vaseline or olive oil and gently try to push it back inside. You may have to do it a couple times or more but hopefully it will stay eventually. Hopefully Lilly will recover quickly. You can't always discourage them from laying but at least you'll have her where if she does you can treat her right away.