Answer:
Make sure you monitor what sites sophia uses and research on the community of said site.
If she uses social media, make sure she doesn't reveal any personally identifying information to anybody, even 'friends'.
If she uses any chat applications, make sure you warn her about the weird people that can always inhabit them.
Give her a rundown of how not to be manipulated online, and how to get rid of weird people that she might run into.
ANSWERS TO PICK:
1) Warn Sophia about listing her home address on social media.
2) Set up privacy settings and firewalls to restrict access to certain sites.
3) Remind Sophia to limit what she shares with other people in online chat groups.