Whether too much flossing and dental cleaning affects/removes the filling?

[Du_deleted]

Hi all,
I had few fillings done before. My friend got few fillings done a couple of weeks back.
She is so scared and worried that the fillings will fallen off during flossing. She is not flossing now. I told her that it will not happen. She is still worried and not letting any of her family members to floss who had fillings before. Does it really affect the filling? Will it fall off? Is that true or myth?
Also, she is not ready for the dental cleaning which she has 2 times a year. Does the dental cleaning removes any filling work during the cleaning process?
Please share your inputs.