She is not going to do much for her teeth or gums. And could hurt herself using a long piece of floss tilted at such angles. Unfortunately, this flossing method will do more harm than good. Flossing this way will be frustrating and ineffective. Learn the 4 steps to painless and effective flossing http://www.toothwisdomu.com/proper-flossing.html
Dental Flossing, it is such a common thing but still many people donot floss thier teeth correctly. there are different kinds of dental flossing available im market. Using correct techinque to floss teeth is very important for oral hygiene.
Some dentists recommend flossing first, some advise brushing first; whichever you prefer, either way is acceptable as long as you do a thorough job. http://articles.mercola.com/sites/articles/archive/2015/06/13/floss-before-or-after-brushing.aspx