If your daughter lives in your house with you and you let her drive your car without informing your insurance company of her licensing status, and seeing if they require her to be added to the policy, then she may not be covered if she was in an accident in your vehicle.

Most insurance carriers require policyholders to notify them of any and all licensed drivers within their household. Thus you should inform your insurance company about your daughter's licensing status so that they do not find out later and believe you to have misrepresented the licensed drivers in your residence to them. 

Most states' insurance regulators allow insurance companies to consider all resident operators of an insured vehicle in rating of an auto insurance policy. Likely once report to your insurer the licensing status of your child, you will have to add your daughter to your policy until she buys her own car and own insurance policy to cover her.