If that's the case then I think that you had better tell your friend how you all feel. Personally I think that its sad that you cannot find it within yourselves to welcome her to the group. As you obviously are not able to do this I don't think there's much choice but to either tell your friend how you feel or cancel the meet-up. To let it go ahead with this feeling in the background would be unkind.
Betty Bromage wing walking at the age of 97



