As I was writing, I noticed that my characters refer to their mother as 'Mama'. That had me thinking: there are a bunch of names that refer to a mother, and I guess depending on social class of the time, the higher ups would be expected to refer to their mother as 'Mother' rather than 'Ma'/'Mama'. It also occurred to me that if the word 'Mama' appeared over and over again, it would quickly become redundant and irritating. Is it OK if I mix it up a bit? How should I make it not annoying? Also, when do I capitalize the noun? Is it when I'm referring directly to the character's mother? So Emily would say, "My Mama" instead of, "My mama"? Is it the same if she were referring to someone else's mother? However, when not in dialogue, does the same rule apply? For example: Her mama was a high-class Southern woman with plenty of political clout, and she knew it. She would be a dangerous one to anger... Thoughts?