My question involves juvenile law in the State of: Colorado

My question is about my daughter who will be 18 in two months. She has been saying for the last 5 months that she is going to move out when she turns 18. And quite frankly I'm okay with that since she causes a lot of issues in our house and refuses to get along with her step-siblings. However, she is not self sufficient, she can not support herself. I think her plan is to move in with friends or family, possibly in another state. If she does leave will we have any legal obligations for her? I know that in the state of Colorado parents are typically responsible for support until the age of 19 if the child is still in high school, which she will be, but what if she leaves of her own free will? And if she doesn't leave on her own, can we ask her to leave when she turns 18?