If your daughter is an adult and working, she needs a plan for saving and moving out. I would sit down with her and inform her that she has until (pick a date) to save and move out. I would also let her know the next time she sneaks someone into the house or disables something, her stuff will be carried to the lawn. You are on the right track. If she has gotten involved with a bad crowd, then the last thing you want is them in your house. I would consider changing your security codes. Honestly, your best bet is letting her know she has to move out. These kids want to "play adult" without the responsibility.