That "semi-rolling" and butt pushing is just what we hope to see, as it is all getting baby into position for the "GO". Don't just let your friends "bed her down" -- make sure they stay IN ATTENDANCE as I'll not be surprised if she goes tonight and we see your announcement!
Hope you feel better quickly, as you'll have a new little friend VERY soon to be playing with, and I'm sure Missy will feel most comfortable with YOU with her during her main event.
Keep us posted, and praying for a safe and uneventful foaling of a healthy little one!