My 20-year old granddaughter has been staying with me for the past month or so because of difficulties she was having getting along with her parents. I permitted to stay with me until she goes back to college, but she has become a very unpleasant guest in my house, and I want her to leave immediately. I have given her a week's written notice.

You evict her according to Massachusetts law - Tenant Rights & Responsibilities (http://www.mass.gov/?pageID=ocaterminal&L=3&L0=Home&L1=Business&L2=Landlords%2C+Real+Estate+&sid=Eoca&b=terminalcontent&f=tenants_rights_and_responsibilities&csid=Eoca)