I just wanted to point out that the number of passes you make with a flat iron really depends on hair texture. I have really coarse hair and my hair laughs at 3 passes of the flat iron (and that's all I was willing to do because I'm not trying to get heat damage).
Also, it's her damn hair (and she ain't even natural) so I really don't care. Unless you my fam and I'm giving you hair products and you don't take my advice, I could give 2 sh*ts about what you do to your hair. It looks to me that her methods are satisfactory to her.