Ella & Sif
Sif wasn't going to tell Ella she couldn't do something -- because why would one of the fiercest warriors in all the realms do such a thing? She would, however, quite happily tell her to be more careful or suggest a different way of doing said thing.
Just because she could still do things didn't mean Ella had to be stupid about doing them, after all.
And Sif had been more than happy to do the more difficult things for Ella while helping her get ready for the party, leaving some of the easier details for the younger woman. Which meant Sif had been doing all the store runs -- because there'd been more than just those initial ones, because come on. Ella. And things like that.
Now? Sif was the one making sure things got to the food table and that they didn't run out and that they got refilled, because Ella was mingling. And she was the one who pulled Ella over to make sure she actually got something in her, food-wise, even if it was just something quick.