What day and year did Fredrick's mother die? Why couldn't he see his mother after illness, burial, and even death? Use textual evidence to support your answer(s).

Frederick did not know the exact date of his mother's death. He was not allowed to be with her during her illness or to attend her burial. In fact, he barely knew her. 

She died when I was about seven years old, on one of my master’s farms, near Lee’s Mill. I was not allowed to be present during her illness, at her death, or burial. She was gone long before I knew any thing about it. Never having enjoyed, to any considerable extent, her soothing presence, her tender and watchful care, I received the tidings of her death with much the same emotions I should have probably felt at the death of a stranger.