I feel like it's safe for me to comment on this b/c I'm a girl and y'all won't clown me for having watched a few episodes, lol.
Nattie's personality is...remember when you were in school and the rule was "no matter who passes the first lick you both get in trouble" and you were like "Who gonna just stand there and get hit so they don't get in trouble?"
Nattie. Nattie is gonna stand there and get hit so she don't get in trouble. She's a sweetheart but she's also very conservative compared to the others, very much about avoiding conflict and scandal (seriously, her reputation is really important to her and it's kinda refreshing to see in an era when folks will show out for nothing but views on IG) and is honest to God the type to call the police and be like "I was just assaulted" rather than defend herself and try to mollywhop someone.
That being said, I don't know how much the Summer/Nattie dislike was staged and how much was real (because they did have a little feud on RAW around the time all this aired) but they did follow this up with Nattie reading Summer for filth and dragging her out of a car by her hair. Had Rosa Mendes in tears like "Can't we all just get along" lol