Avatar 2 Of A Kind

Y/n is a 14 year old girl air bender one of the last besides Ang and in this generation Y/n and Ang both are the Avatar but what happens when Y/n wasn't in the Ice ball with Ang she is a traveler on the streets with no parents she knows how to bend all elements but she is born as a Air bender and the other elements she knows are really weak and can only summon a little bit of the other elements.