It's DH's 40th next week and we are having a party. One of his colleagues and his wife have been TTC for years: there was great rejoicing when she fell pg last year. Sadly, she had a miscarriage. I don't know either of them well, him better than her - I've probably met her about 3 or 4 times. I know everybody is different but I don't know whether I should say I am very sorry when I see her, or just stick to thank you for coming and ignore it?