In an awful rush, mother gets up to cook eggs (3,8)
I believe the answer is:
Here is my best explanation:
'in an awful rush' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'mother gets up to cook eggs' is the subsidiary indication.
'mother' becomes 'dam' (female parent of an animal).
'gets up' says the letters should be written backwards.
'to cook eggs' becomes 'scramble' (I've seen this before).
'dam' backwards is 'mad'.