Mama Raikou is probably more angry at Medea, for being seen more as a Mother by Gudao than herself, than at Circe.
The bouquet is for Circe. She is the one Gudao sees as a mother figure, not Medea.
GO'OU SHOURAI TENMOU KAIKAI...Look, Medea! I received a bouquet from Master!*SHOCK*He says "Thank you for everything"!*STAAAAAAAAAARE*This is some sort of proposal, right?Eh? So carnations stand for filial love?So he's considering me more as a mom than a wife?No way!?
You're kidding, right?She's a bit happy, though.