She was , however , the first witness to use her bad memory , truculence , and total lack of refinement , and at times , even ignorance , to great advantage .
She was not the first witness to be evasive , sarcastic and crude .
witness was , however , the first witness to use witness ' bad memory , truculence , and total lack of refinement , and at times , even ignorance , to great advantage .
She was not the first witness to be evasive , sarcastic and crude .