I ought to return it to him.

But how can I?
I don't know where he lives.

I don't even know his name." Then she fingered the other end.

She slid the ring but hesitated to do more.

To look at the paper seemed like prying into the owner's affairs.
It must be something precious for him to carry it about with him.
Suppose it was a love letter from his sweetheart?
She blushed at the idea.