TS, I hope you'll find a partner one day, who can discuss all these hypothetical topics with you freely. Everyone has different values/expectations so it's not fair to assume one's intentions without having a discussion.

Say, if you're insecure, then be forefront about it: ask if it's ok to post photos together or whatever, if she's cool then good, if not then ask why. It is only when she beats around the bushes or get defensive somehow that it becomes a red flag.