This can be a tough situation.I can understand that she doesn't want to make any waves,and risk losing her family.I haven't attended a meeting or a memorial in 4 years,but last year the memorial presented a problem for me.My brother in law (who is a really nice guy regardless of the org)asked me if would attend because it was the first time he was giving the memorial talk.I told him I would have to see.I was so mad at myself for not standing up to him and saying I don't believe it and that it would be hypocritical for me to go.Instead,on the night of the memorial I said I didn't feel well.What a big chicken,eh?
Anyway,your friend needs to do what is right for her,whether that means making an excuse,or telling the truth.None of us live her life,so we can't judge.Hope all turns out well!