Dad, Mom, Sis, Grandpa, and other nouns are not capitalized IF an adjective is before it. For example, your mom, not your Mom; my grandpa, not my Grandpa.
A character’s thoughts are italicized and the words I, my, mine, or any other first person pronoun doesn’t have to be included in the wording to make thoughts. They are words that the narrator wouldn’t/shouldn’t use as part of the narration — unless the manuscript is written in first person.
Thoughts, which are italicized, must make sense as thoughts. Words spoken should not be confused with words thought by a character.
Editors or authors who are not sure about something should get help from someone who does know before telling the designer to do something wrong.
If each person involved in the copy edit sends in his/her revisions, sending in contradictory revisions for the same exact problems, the designer is forced to make a judgment call or pester the boss. Each successive person should read the preceding person’s edits. The designer follows the following chain of command: The author is outranked by the the editor; the editor is outranked by the department head, who is outranked by the company head. Everyone usually finishes proofing a proof at different times; therefore, seeing what others said first would help a person see if he or she agrees or not. A quick email would help each person better understand why or why not.
Follow the style manual of the publishing house that is doing your book. Read it, refer to it, refer to it again, read it, follow it.