A girl I've been talking to has asked me to come see her at her job at a restaurant. She even sent me her work schedule for the week. Is she flirting?

We've been communicating semi-regularly for a couple of months now (mostly via text), but I've actually known her for several years. A couple of times in recent days she had texted me really late at night (like 2am) saying she couldn't sleep.
A girl I've been talking to has asked me to come see her at her job at a restaurant. She even sent me her work schedule for the week. Is she flirting?
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