Depens in part of the agreement you have with stepdaugher--written or oral? Does she pay rent or not? What other terms to yuoru agreement with her exist? You may have to evict her in accordance with GA laws, just as if she was a tenant. You may not. Recommend you repost with more facts about why step daugher lives there and under what arrangement her stay was made or see a local landlord tenant attorney and discuss the facts.
FYI, you didn't mention your wifes' position in the matter. SOunds like potential for a messy situation. You and your wife would need to be acting in concert with one another on the matter, or it could really get hairy.
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Eviction rights are dependent upon the type of tenancy she has. If there is no written lease, you must provide at least 60-Days advance notice before you would have the right to evict. If there is an agreement between you, you must abide by the terms of the agreement.
To actually evict your step-daughter, you would have to file an action in your county's Magistrate Court.
I hope this information helps answer your question(s).
~ Kem Eyo
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