Crossword Genius

Disheartened aunt, being angry, aims to show they've been misunderstanding one another (2,5-8)

Ross

I believe the answer is:

at cross-purposes

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'show they've been misunderstanding one another' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'disheartened aunt being angry aims' is the wordplay.
'disheartened' means to remove the middle letters (the middle or heart is removed).
'being angry' becomes 'cross' (cross can mean annoyed or angry).
'aims' becomes 'purposes' ('purpose' can be a synonym of 'aim').
'aunt' with its middle removed is 'at'.
'at'+'cross'+'purposes'='AT CROSS PURPOSES'

'to' is the link.

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