<human>: So I'll try to keep this relatively short.  My mother is a terrible person, I just wanna get that out now.  I know shes a terrible person, my brothers know, our children know.  The only person that is not aware of this is my mother.  She s currently throwing a quincenera (Hispanic sweet 16) for my oldest niece(1st born grandchild).  One part of the ceremony is where the birthday girl, her parents and the sponsors of the event gives speeches.  I think you can guess where this is going.  While at a rehearsal dinner, it comes to my mothers turn to give her speech.  She goes on a very long tangent in which she states "I always wanted a daughter, but I unfortunately had 3 boys.  It wasn't until you came into my life that I was able to truly love a child.  You're not my granddaughter but the daughter I always wanted. You're the greatest granddaughter a grandmother could ever ask for.  You're perfect."  Now this last part is where I have the biggest issue with, mainly because she said it with both of my nieces in the room.  So my mother will probably realize that her speech was inappropriate (although to be honest I'd love for her to say it at the actual event in front of the entire family) and try to do damage control.  I am expecting a call from her to explain what she actually meant by that speech.  The thing is regardless if she meant to or not she ,in the house of god mind you(shes super religious), admitted that she never loved me or my brothers and cares very little for our children aside from her favorite granddaughter.  So what do I do?  Do I finally give in to all the hate and tell her to go fuck herself, do I continue my current course and interact with her as little as possible, or do I overlook it as something stupid said during an emotional event, or am I just overreacting?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Mom admits that she never loved me, my brothers or any of the grandchildren except for my oldest niece, at nieces birthday reception.  How should I react.