בשכר נשים צדקניות שהיו באותו הדור נגאלו ישראל ממצרים
Gemara Sotah 11b
By the merit of the righteous women that generation was worthy to be redeemed from Egypt
Rashi Shmot 2:1 "and he took a daughter of Levi"
he had separated from his wife because of the decree of Pharoh to throw all the baby boys in the Nile. Miriam said to her father: "Your decree is more severe than that of Pharoh. He decreed only against the newborn males, but by separating from your wife, you have removed the possibility of having females as well!!" Because of this counsel he remarried his wife
Rashi Shemot 15:20 "with timbrels and with dances"
The righteous women of that generation were confident that the Holy One Blessed Be He would perform for them miracles and they had brought timbrels from Egypt
Chazal: and He saw our affliction
This refers to the separation of marital relations
Rashi Shemot 12:27 And the people bowed the head
The nation bowed upon the good news of the impending redemption, the coming to the Land, and the tidings of the children which they would have.
Rashi Shemot 38:8
The daughters of Israel had in their possession copper mirrors which they would look into when they would beautify themselves. They donated them to the Mishkan. Moshe rejected them because they were made for the Yetzer Hara, the evil inclination. Hakadosh Baruch Hu said to him, "Accept them, because they are the most beloved to Me of all, for with them the women established many legions in Egypt." When their husbands were exhausted by the racking labor, they would go and bring them food and drink, and feed them. Then they would take the mirrors and each one would look at herself and her husband in the mirror, and entice him with words saying, "I am handsomer than you." And through this, they would bring their husbands to desire and would have relations with them and conceive and give birth,