My dd3 is 2yo and she loves her brother (ds1) very much. They always play together with ds2 and get along very well. When dd1 trys to play with her, she refuses to play and goes off to find ds1. dd1 is 7yo, and finds this very upsetting, especially when dd3 plays with all other siblings perfectly. if we are doing a family activity, she is not mean or anything, just at home she refuses to join in or play with dd1. What can I do to stop dd1 being left out?