She has £50 to pay out! (5)
I believe the answer is:
shell
'pay out' is the definition.
(thesaurus)
'she has ps50' is the wordplay.
'has' is a charade indicator (letters next to each other).
'ps50' becomes 'll' (I can't justify this - if you can you should believe this answer much more).
'she'+'ll'='SHELL'
'to' is the link.
Can you help me to learn more?
(Other definitions for shell that I've seen before include "Conch, perhaps" , "Mortar missile" , "Crustacean's protection" , "Mollusc's protection" , "A little pasta" .)