Is the prayer of a woman who prayed alone in the mosque, after intending to pray in congregation but finding no one, considered a congregational prayer?

It is permissible for a woman to pray in the mosque, but it is better for her to pray in her home. If she prays alone with a congregation of men, her prayer is valid, and she will receive the reward for congregational prayer. If she prays completely alone with the intention of joining a congregation, she will receive the reward for that, even though her prayer in her home is better.