Sometimes I wonder if it's denial. "If I don't admit the symptom, nothing will be wrong."
Other times she doesn't want to admit responsibility for causing a problem. (Drinks loads of water hoping to avoid UTIs, but causes low sodium.) "I do NOT drink a lot of water!"
Then there's confusion from increasing dementia. Of course she stoutly denies that.
She SOUNDS lucid so med professionals take her word over mine. She's 92.