We're going to a wedding of an old school friend on saturday. The wedding has been brought forward from November as the Bride's mum had been diagnosed with cancer. I emailed my friend, the groom yesterday to wish him all the best for the big day and he told me that the bride's mother had passed away a week or so ago but the wedding is going ahead. What do I say to the bride? Would she not want me to mention her mum as I didn't know her. Don't want to upset any more than she will be already but don't want to completely ignore the fact that her mother has just died.