Happy Birthday to your mum. The Queen of Denmark turned 80 today. The Grand Duke of Luxembourg and his youngest son also celebrated their birthday as did one of the Belgian princesses. I'd say your mum is in good company.
Feel better ... a cup of hot tea with a bit of honey, lemon and a shot of bourbon should help unless of course it isn't a chill but something else that ails you.
I understand completely. I once had an opportunity to play with a willing 19 yearold. Thing was I'd known him since he was 11 when he joined the local Scout troop and he was a kid I'd mentored. Lovely as he was I just couldn't.
His mum's had the benefit of his labor long enough it's time to share, beside that she's not likely to appreciate his sweaty presence nearly as must as you would.