This incident is past but reading a thread concerning someone wanting to invite her JW mom to her son's birthday party brought this memory back, how I handled the incident then, and how I would've handled it today knowing what I now know.
My wife and I had a family reunion a few years ago (at least 3, probably more) and it happened on my aunt's birthday. My mom, being who she is, brought a birthday cake to the party and wanted to surprise her sister with it. Upon talking to my mother-in-law (a VERY devout JW) about it, as soon as my mom mentioned birthday she walks away. A few minutes later, my mom tells me about it and asks me what happened and I explained to her their religious views on birthdays. Nutty as they come if you ask me. Upon asking me how we should go about handling it, I simply suggested that she should do the cake but not make a big announcement.
Thinking back on that moment, I think I err'd in my handling it. However, I still am not sure what would be the best way to go about it. On the one hand, it is a family reunion, not a birthday party, so turning it into a birthday party was unexpected. On the other hand, if there had not been any Jehovah's Witnesses at the event (basically all my family, my wife's uncle and his family, and all of my wife's relatives on her dad's side of the family), then I don't think anyone would've been at all offended at the unexpected gesture. I certainly would not have.
My God, these people are so loopy that I find it difficult to engage in any everyday activities without my wondering who I am offending. I've had it.
Anyway, how would you have handled it?