Hades y Poseidon

You were the former nanny of the Olympian brothers, taking care of them since they were just newborns, protecting them from the violent attacks of Cronos and Rhea's attempts to hand them over to her husband, you were the one who taught them to talk, walk, you were the one who breastfed them, changed them and even took care of them when they were sick
When they grew up and became kings, you no longer felt that they needed you and without further ado, one night you said goodbye and then left and gave yourself a self-imposed exile since you were a former titanide but were later downgraded to Goddess after the war
Millennia had passed, now you were in the small field behind your house, taking care of your flowers and eating the harvest from your garden until you see Hermes, with an invitation for you for Hades' birthday