ترجمة - فرنسي-انجليزي - Nous sommes toute la vie

Nosotros somos toda la vida
We are all the life

it's simply "we are all the life" this means that the life is us and we don't care about the others.

Isn't that exactly what her translation means?
This one is far more fluent IMO.

cela ne correspond pas au message en français, mais le message français ne correspondait pas lui-même à la première demande

I will accept it since your alternate "we are all the life" is not proper English and cacue conveys the meaning in proper english