### Clue: Former partner. Her cue – question initially about source of finance? (9)
### Answer: EXCHEQUER 
 ### Explanation: Definition: source of finance
 EX(a former spouse or partner) + **anagram of**(… about) [HER CUE + **the 1st letter of**(… initially) "question " ].
Defn: …, specifically the treasury of a state or nation.