<human>: Could you distill the essence of the text into 1-3 sentences?

My mother is a very religious (born-again/speaking-in-tongues type) Christian.  I've known since I came out that she was very against me being gay.  I used to get emails on a regular basis trying to convert/convince me that I wasn't going to go to heaven.  She gave that up on the quite a while ago because those exchanges usually ended in debates and hurt feelings - so I recently haven't given her anti-gay tendencies much thought.  Day to day, our long distance relationship has been fine - shallow - but fine.  

I'm a relationship with an awesome woman now, and family and kids and a future together are in the realm of possibility, and broaching this subject with my mom is... kind of a big concern.  I'm a bit scared about how she will react, even more so after a conversation with my younger sister.  She revealed that my Mom boycotts Disneyland because they have "Gay Days", and after I admitted I was kind of surprised that Mom would take it to that level, my sister told me that my Mom had confided that she wouldn't accept my kids as her grandchildren, were I to have them.

I don't know exactly when this was said, or in what context, but obviously is pretty disconcerting, and I'm having a hard time not thinking about it.  I don't know if it's worth bringing up with my Mom, I don't know if she still feels that way.  Should I ask her?  Clarify with my sister?  Should I wait 'til after the holidays?  Should I just suck it up, go on with my life, and just tell her when I/my partner is trying to get preggo, and be prepared for her to respond negatively?

Any input is welcome...
<bot>: My Mom told my sister she wouldn't accept my/my partner's kids as her grandkids, 'cause we gay.