Which detail shows how the character of Sydney develops a theme of this story?

1.) When the siren goes off, Sophie cries and Sydney hugs her.
2.) Sophie worries about her things, but Sydney realizes it is her family that is important.
3.) Sophie is upset by the weather newscast, but Sydney reminds her that it might not be serious.
4.) Sophie runs around the house to prepare while Sydney remains calm.

*From Tornado Watch. Thanks in advance!