J.B.
Hmm, that's rough. Clearly she has self esteem issues. She is one of those who HAS to have the lime light...always. Very annoying. Do other mom's notice or saying anything? Do they ever comment on being interrupted, or is it just you? There is no way around it, no matter how nice or sweet you try and say it, she will probably get offended. So, the next time she does that I would just say "Excues me" and look her straight in the eye and say "if you don't mind, may I please just finish what I was saying to Jane really quickly?" That's it. And do it EVERY time- being consistant. Like training a child!! She should get the point and hopefully, just apologize and let you finish. Or, when she rudely yells from 10ft away, just ignore her. Keep talking like you don't hear her. HA! Good luck. Amazing how adults act this way :)