Not sure what I could have ever done to offend this woman, but iv just been blatantly blanked not once, but twice while we were both with our kids who recognised each other...
Our kids go to the same place every day and play with each other there... Of course she doesn't speak to me there either but it's a drop off/dash out situation and I presumed that was why we never spoke as she might be rushing to get to work iyswim
To make matters worse I obviously smiled both times thinking at least she'd acknowledge me the second if she pretended not to see me the first (which was impossible, we were stood next to each other!)