Is marriage and its fruitful righteous offspring considered an ongoing charity for the woman who strove to choose the righteous wife for her brother?

This act is a good deed for which the doer will be rewarded and which Allah will accept from him, based on the Almighty's sayings: "And whatever good you do, Allah is knowing of it" and "So whoever does an atom's weight of good will see it." Furthermore, Allah helps His servant as long as the servant is helping his brother. However, this act is not considered a perpetual charity (Sadaqah (definition) Jariyah).