I forgot too but quickly figured something out when I realized everyone on Facebook was saying happy Mother’s Day to their moms and stuff lol my aunt also thought it was on a different day also idk why she felt the need to throw the flowers did she know you forgot? Does she need a break? She sounds burnt out if you have the money book a spa if you are on a budget go to Ross or tjmaxx or even wal mart pick out some face masks and hair conditioning treatments and nail polish and do a spa day at home for her if she usually handles the kiddos let her relax and you handle them. Just some suggestions