What does it mean if a woman sends you a vague "hello" with a photo?

A woman initiated a text conversation with a vague "Hello" and a photo, but I don't know who it is, or what the photo is indicating, or what it means. I have a strong intuition that it is who I think it is. I haven't seen her in 20 years. But the image is puzzling. Zooming into it doesn't do anything. Mainly I'm looking for women's takes on this.

What does it mean if a woman sends you a vague hello with a photo?

What does it mean when a woman raises a glass as a hint or whatever?

What does it mean if a woman sends you a vague "hello" with a photo?
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