@"Kiwi Angel" ... OMG! I can feel your anger & pain ..... Stupid bitch! It was not her 'right' to tell anyone!
Sadly, you can choose your friends, but you can't choose your family! :(
I haven't told my stepsister or stepbrother's families for a variety of reasons - tho someone else 'outed me' on Facebook - but they either 'missed it' or didn't respond to it by choice. I only wanted my close friends & family, who I knew would support me, to know ....
Try not to let it get you down too much, difficult tho it is, as she is your hubby's mother - just ignore the silence or lack of contact .... because that is YOUR choice, not hers.
haha Most have a 'golden child' .... my stepmother thought her son was the best - but all I saw was someone sucking her dry of money without repaying it, avoiding family responsibilities (my siblings & I were more attentive to her day - day needs & 'handyman requirements' but rarely was compensated) .....
BIG HUGS coming your way xxxxx