JAMB - English Language (2019 - No. 113)
Bridget denied that she wasn't there. This means that
She confessed that she wasn't there
She owned up not to be there
She maintained she was there
She maintained she wasn't there
Explanation
'Deny'' is to say that something is not true.
'that she wasn't there' is the accusation.
For Bridget to deny that she wasn't there, she is simply saying it is untrue to say she wasn't there. Therefore, she was there.