Lucy's Injury

Lucy, Natsu and Happy set off on a mission to defeat a golem. However as they completed this sacrificing only the magic power something terrifying happens. On their way back a creature had pounced out making an attack on Happy but Lucy ends up getting hurt.

She gets badly injured, and Natsu get worried. What does Mira say for Natsu to do to take care of Lucy that only reveal feelings?

These feelings aren't created in the process...they are discovered.