W sends me a picture of all her things packed up in the apartment
Sounds like she was being overly dramatic (says "in the hallway with my stuff" like it was an emergency, when in fact her stuff was still in the apartment). You handled it great Ben! You didn't rush to rescue her, you didn't freak out, you calmly responded and gave her time to figure it out herself. Well done!
Oh and yes, I'd say chances are very good it was a temperature check on her part.