She's had one ring and expects another (7)
I believe the answer is:
fiancee
This might be a double definition.
'she's' is the first definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'one ring and expects another' is the second definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'had' acts as a link.
Can you help me to learn more?
(Other definitions for fiancee that I've seen before include "Betrothed woman" , "One engaged to be married" , "She's engaged to be married" , "Promised" , "Girl engaged to marry" .)