Maybe she helped or encouraged someone else at a key moment in their life. Maybe she saved an abandoned cat. Even a small contribution is valuable.
As it pertains to the lives of everyday people? Yes it is. As it pertains to the Universe? Absolutely not.
Tell me, who has ever lived on this planet that has ever contributed anything to the Universe? Everything will one day come to an end: humanity, the earth, the planets and stars…all will become lifeless until another Big Bang cycle hopefully produces another set of miniscule planets that manage to develop life. You realize that no human has ever done more than influence other humans who live on this planet. It is that influence that has given humanity meaning. If we are an influence for good, then our lives have been worthwhile. If you cannot believe that, then humanity is nothing more than a biological blip in a virtually 100% lifeless, meaningless universe.