Here are 10 tips on how to write a condolence letter and what to say and what not to say. I'm so sorry to hear about your mother's passing.Nina was a very special woman. Keep the letter as brief and as short as possible. Find a sympathy message to send to someone who lost their mother, including ideas for texts, DMs, and facetoface conversations. Please accept my heartfelt condolences during this incredibly difficult time. "The loss of a mother leaves a void that words cannot fill. When planning what to write on a sympathy card, avoiding using the words "death" and "died". Use gentler words like "passing" or "loss" instead. I'm so sorry for your loss.