Been there, Done that. If the ghost doesnt bother your family physically or do anything destructive, then talk to it. From your past posts you've said it was an older woman. Thank her for not scaring anyone when you can think of it. Talk to her every so often telling her little family tidbits of info. Now I'm not suggesting you walk through your house and scream at the top of your lungs...your neighbors will probably avoid you at all costs. But when my family moved into an old house in Pennsylvania, we had a similiar situation. We had a male entity living with us. We'd get the usual treatment of TV turning on at 4am in the livingroom, lights being left on or turned off and our family pets (Parakeet, Cat & Dog) would choose random times to run/fly wildy through the house. Then one day my grandmother noticed a man at the top of our attic steps. Thinking it was my father she said something to it and walked into the kitchen. When in the kitchen she began to fix a sandwich for him thinking since it was lunchtime he would be hungry. She took the sandwich upto the attic and heard him working in the corner. She called to him and got no response. When she went to the corner she'd just heard him working in, there was no one there. Being who she is, she believed that maybe he'd walked by her and into the cellar. No one there either. So she went and spoke to my mother who ended up telling her my father was at work....She had the house blessed the next week for my parents.
All was quiet for a few weeks, and then things started happening again. We never had any serious problems but over the next couple of years we pretty much just ignored the little "weird" things that would happen. I have to stress that no one was ever "touched" or purposely frightened. The Ghost never did anything destructive. So as time went by we learned to live with our "friend" and spoke to him regularly. All our friends knew of him and whenever we heard a sound in a room that we knew no one was in....it must be "ralph." Our resident ghost.
So I reiterate, if the ghost hasnt done any harm or frightened anyone purposely, (and you'll know if its done purposely) then treat it as another friend of the family. You'll find that the ghostly annoyances that accompany having a presence about, will slow to cease and you'll be able to go about living peaceably. Though I will add, life will never be normal.
Hope this helps ya.
~wnied~