Bithiah. I am the Pharaoh's daughter, and this is my son. He shall be reared in MY house... (cue Cuteness Proximity voice as she looks at him) as the Prince of the Two Lands.
She gives Moses a hug upon his safe return from war, and Moses remarks that she is "the first face he looked for, but the last he found."
Upon the revelation that he is a slave, Moses remarks that Bithiah is the one he thinks of when he thinks of his mother, and he will love her regardless of anything that happens.
When Moses is punished, Bithiah throws herself upon Sethi's mercy, pleading for his life.
During Passover, she is freed from captivity, and joins Moses in the supper. When others protest that she is an idol worshipper, Moses shuts them up, and prepares a place for her. She then remarks that there is a wonderful grace in his eyes, and she hopes one day, she can come to understand it.
The fact that her guards were allowed to attend the supper as well is heartwarming in itself.
There's a bit of interplay during the supper between her and Moses' former brick-pit colleague Mered (Donald Curtis), suggesting that they're going to end up together. In the Bible, They Do!
She offers a place upon her litter for an old man, and when he says he is too sick to travel, she tells him she will plant a fig tree he is carrying in the new land.
She offers to sacrifice herself to stop Pharoah's chariots (and it's Mered who stops her). She's also seen shepherding numerous children between the parted waters.
She calls out the sinning Israelites for their doubt, claiming that God would never allow Moses to fall before his work was finished.
Moses coming down from his first meeting with God, with a beatific expression and insistence that he's going to free his people with a staff, not a sword.
Borders on Tear Jerker: The old man who was murdered by the overseer, as he dies in Moses's arms, laments that he couldn't have looked upon the man who was prophesied to free his people. Without even being aware of it, he got his wish.
Nefretiri instantly pulling out all the stops to save Moses' son, even if her true motives were ultimately selfish.