Some condolence messages given for the loss of a mother include simple messages such as, "I am so sorry for your loss." Wishes for peace and comfort are also appropriate, as are reassurances that the writer is available for whatever the bereaved might need.
If the writer knew the deceased, a brief mention of a memory or connection they shared is appropriate. If the deceased was a colleague or a boss, the message can include how long the writer worked with the deceased and how beloved she was in the workplace. If the writer admired the deceased, she can say, "Your mom touched my life and inspired me with her generous spirit. I am glad that I knew her."
When the writer is able or available to help the family, she can add any information about helping to the message. Offering to make meals, watch children, do housework or do any number of activities that lighten the load on the bereaved are a few examples. It is important that the first message is not the only contact made with the family. Following through with offers of help and sending messages on special occasions or holidays is also thoughtful. A writer should not say in a condolence message anything that minimizes the grief of the family, such as, "I know how you are feeling."