Abiography is

a. a true story written about a real person by someone else.
b. a fictional account of historical events.
c. a story written by an important person about his or her own life.
d. a historical map, photograph, or document.

being ignored by someone and then accepting the fact was really tough

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."