No, it only happens to her sometimes and I just tested it copying from word > notepad > wordpress and it was fine. Which is why it’s so puzzling.
I just chatted with her on Skype with screen sharing and watched what she did and I couldn’t see anything wrong with what she was doing.
One thing I forgot to add, is that I do this same technique myself for “cleaning” text and it works just fine for me with no problems. :/