Would you call or not?

I'll start by saying that me and my mother have never had the best of relationships. She lacked on many fronts as a mother and I learned to resent her over the years..she lied to me about whom my father was for 16 years, was an alcoholic for 6 of them amongst other issues..however for the past year or so I've tried to forgive and forget and we seemed to get along better. I suppose we all need to feel wanted and close to our parents, so I tried my hardest to to achieve that in order to fill in that emptiness. We found out recently that we are expecting our third child and I called and told her. I made it very clear it was to be kept secret until we had had all the tests run and knew all was ok. She promised..but a week later I found out she had called around and told everyone. I was livid. I called her very upset and told her she was out of line. She mumbled and stuttered not knowing what to say and I told her I had to go ( I wanted to avoid a full blown argument) I hoped in some stupid way that she would call and apologies or try and sort things..it's been a week and she hasn't. I'm sure she thinks she's right as she always does...but I'm thinking, if I call her am I playing into her game? Or am I being the bigger person?