Aw Beth,
It makes me wanna draw a black line down the middle of your face and put lipstick, mascara, blush and curls on one side of your head; and shave the other side, glue on 1/2 a mustache and hang a pipe out of that side of your mouth!
The women you speak of have
no sensitivity nor a clue. I'd probably feel slighted too (as I expect too much from people, I guess) but I'm stubborn too, so I think I'd go to the banquet and if any of those women said anything derrogatory, I'd point out that I am both mother and father to my son and therefore am here by default.
Maybe you will decide to reply thus to that email and ask for consideration next time?
Seems a shame to have to bother though eh?
Sela
PS: I remember once when my girls were smaller and I sent my youngest with my eldest to a Girl Guide meeting because I had to attend a funeral home (and I'd be unable to pick up the young one on time from her group). I called the older one's leader and asked if it would be ok to send the younger one and she was very pleasant and understanding.
The next week, when I delivered my youngest to her meeting, the leader there stopped me in the parking lot and accosted me, in an accusing tone, saying: "You should not have sent your youngest daughter to that meeting with your older daughter!! That was very inconvenient for me. You should have called me first."
I responded: "I'm sorry I didn't think to call you. My friend died very suddenly and I had to go to the funeral home. I called the other leader and she was ok with it. It was all done in a hurry."
"Well!", said the leader, "I have to plan ahead for these meetings and I have to get crafts and things ready for the girls and I need to know how many are coming to a meeting blah blah blah blah....."
I interupted (ticked off, at this point) and said:
"Not to worry. The next time one of my friends feels like dying, I'll ask them please to do so at a more convenient time that allows me to inform you and request your permission to make alternative plans."

Her mouth dropped open and she walked away in a huff and I thought:
"Most people would likely have just offered condolences.

I can't imagine what's in some people's heads.