I would sit down with my child and discuss the situation. I would make it clear that her behavior is unacceptable and she is going to have to make changes. I would ask her if there is something holding her back from moving forward? Perhaps she is scared, not sure how to create a resume, afraid of criticism in a working environment, afraid she will fail in college, etc. If so, then we talk and make a plan on how to clear these hurdles. I would help give her the tools she needs to move forward.
We would also make a plan that includes a timeline. I will help her in any way I can to become more independent. That means I will teach her how to be self sufficient by not cleaning her room, not doing her laundry, and not picking up after her. She will find herself in the position that she needs to step up and take care of her own tasks.
My child would no longer receive an allowance. I hope I am raising her in a way that encourages her to try new things. If she is old enough, she will work. That becomes her allowance.
Lastly, our timeline will include the end date - the date by which she must be employed, tending to her own tasks and contributing physically and financially to the household. If she does not meet these goals, she will have to fly the coop and make it on her own.
I will always love her and support her emotionally. I will always help giver her the tools she needs to succeed. All of our kids have talents, interests, passions that they can explore to make a life for themselves. I try every day to show my daughter that the world is extraordinary and it is incredible to gain independence and get out to explore!