I was working from home today. About 10 a.m. I was on the phone upstairs and I saw my NDN peering through our downstairs window. She was there for a few minutes then she moved round to a bit of the house I can't see from upstairs. I finished my phone call and came down to look for her, but she'd gone. I went round to her house and said 'I saw you just came over, sorry I missed you, is everything OK?' She flatly denied that she'd been round to ours, and it was a bit awkward, so I said that I must have been mistaken, but I know it was definitely her. I figured maybe she had heard noise in our house, and was just checking for burglars, but was embarrassed in case I thought she was snooping. I mentioned it to my husband when he got home from work tonight, and he said that last week he came home at lunchtime and saw the same neighbour 'hot-footing it' over the low wall that divides our houses and rushing into her house. He thought it was a bit odd, but not worth mentioning. I'm sure it's nothing sinister, but I am just a bit baffled. We are reasonably friendly, we moved in two years ago and she's been round to ours for coffee quite a few times, so I can't see that our house would hold any great mystery to her. AIBU to think this is a bit odd?