When a girl says "talk to you later/talk tomorrow" does she want you to message her? Or just being polite?

Yea so I really like this girl and have been speaking to her non stop for like 5 days and it kind of ended here and I don't know if she wants me to message her or not...
When a girl says "talk to you later/talk tomorrow" does she want you to message her? Or just being polite?
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