She didnt see sero at first.
on her way there she sees him, he looked like this:
(HEHHEHEHEHE)
He kept cooking, just being himself.
He kept cooking for 20 minutes then he called everyone down, including bakugo and Ash.
Sero gave headpats to everyone then he saw ash and Bakugou and he just skipped past bakugou and gave ash a little hug and moved.
"Alright! I made some breakfast for everyone!"