I am sending a STD to my aunt and uncle and I would like to include their grandson (my deceased cousin's son, let's call him Dan, age 9). Do I send Dan his own card or can I include him on the card with my aunt and uncle? Dan splits his time between my aunt and uncle, his mom, and his other grandma. I do not want to send an invitation to Dan's moms house as there is a feud going on with her and I would rather not upset anyone by inviting her. But, I am also afraid that she would be offended if I sent a wedding invitation to just her son and not her. I don't want her deciding that my aunt and uncle cannot have Dan stay with them anymore. So... how do I approach this? I really want Dan to feel included in this wedding. I would hate for all of his cousin's to be invited and not him.
Edited: Wrong Wording, sorry! meant STD not Invitation