Bumps in the Night

I was in my room when all of a sudden I hear this thumping noise over my head that sounded like a cane hitting the floor, but we don't have an attic so there shouldn't be a noise above my head. I called my mom to come into the hall, she was in her room, but when she did, the noise would stop (this happened about three times before it stopped). She said she didn't hear anything except the clock ticking, so when she back into her bedroom, the noise started again, it was louder than before.

That night when I told her what I heard, she said that there was an old woman who lived here before us that would walk with a cane, after hearing that I got the chills. I started to think of ways that noise could have been made, maybe it was a squirrel, but it was too late for squirrels to be out, so I thought that it might have been something else, but I just couldn't think of anything that would work ,I really didn't know what it was.

So ever since then I been thinking that it was the lady that my mom told me about just telling me that she was still there, so she probably didn't mean to scare just to let me know.

I think that it was the old lady. What do you think it was?