My daughter is devastated that her 7 year old son came out of school yesterday with a Mother's Day card for her and his father's wife. His father left my daughter when Max was 15 months old after 11 year relationship and 3 years married - for the woman he has now married. My daughter was heartbroken and the affair and break up was like a train crash. She's recovered and moved on and has always maintained a relationship for the sake of Max but this has hurt her deeply. How would you deal with this as her son was mortified and very angry that his mum was so upset and told her to get over it!!