According to Exodus, Moses's sister who watched his basket was Miriam.
When Moses was placed among the reeds beside the Nile, his sister stood at a distance to see what would happen to him. After Pharaoh's daughter found the baby, Miriam approached and asked whether she should call a Hebrew woman to nurse him.
Miriam then brought Moses's own mother, Jochebed, allowing the family to care for him during his early years. This detail explains how Moses remained connected to his birth family even after Pharaoh's daughter adopted him into the royal household.
Miriam later appears as a prophet and leader in the Exodus narrative. After the Israelites crossed the sea, she is described with a hand drum, leading women in song and dance. Readers sometimes mix up Miriam and Jochebed: Jochebed is Moses's mother, while Miriam is his sister. Aaron is their brother and later serves as Israel's first high priest.