Slump? Unfortunate daughter should stand up (5)
I believe the answer is:
droop
'slump? unfortunate' is the definition.
'droop' can be an answer for 'slump?' (slumping is a kind of drooping). I'm not certain of the 'unfortunate' bit.
'daughter should stand up' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'should stand up' becomes 'roop' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'd'+'roop'='DROOP'
Can you help me to learn more?
(Other definitions for droop that I've seen before include "Flag" , "Sag downwards" , "male problem?" , "Sag, hang down" , "languish" .)