She looks just as confused as I am

So this happened while playing in the Darkness Falls Mod, but it's also known to happen in vanilla.  I hit her one time with an arrow while she was "asleep" and as she went to get up glitched into the ground and got stuck. thought it neat enough to get a capture of. I'd love to be able to incorporate these "stuck" zombie glitches into my build. 

https://youtu.be/AhZSma3GxZM