Cheetah-bot is not always right, but it always helps if you source the original material somewhere in your post, even if it's something you yourself wrote. I'd have Cheetah call me out for re-posting my own book reviews on here, but only when I didn't attribute the source to the original page on Goodreads or what not.
Also, Cheetah doesn't poke you for minor copy/paste as far as I can tell, but it will call you out for wholesale lifting of content published elsewhere. So make sure you're being honest about citations when the material is not your own, include links to the original source of the material whenever possible, and you'll fall off Cheetah-bot's radar quickly. Hope this helps! :)
Many thanks for your opinion, my mother has the same problem as you, she writes information for blogs but it is impossible to use them in steemit without cheetah detect it, when I always include the original source but same and has given flag , But hey, I'll try not to make any more citations.