I don't get to go to every meeting of my guild, but I always enjoy when I do get to go. As a granny myself, I'm sure watching the kids is something your mom enjoys anyway. And it's only once a month. And it's good for the kids to see that you have interests that don't always include them. I think they respect you more when you do something that is important to you. You have to help them learn to be well-rounded by being well-rounded yourself. GO! They'll thank you for it! :) :)