Your father's girlfriend cannot simply boot you out without going through proper legal process. The police will not get involved in removing you from the property without a court order after an eviction. You need something from your father indicating that you have the right to remain in the property. Get him to sign something - best if it is a lease or some other document giving you full rights of occupancy. Your next step is to contact a local attorney to discuss how to protect yourself going forward. This forum is really not the place to get specific legal advice on a situation such as this - you need someone to review all of the facts, and to give you specific advice as to what you need to do to preserve your right to remain in the property.

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