Translation of the verse 11 from Surah Al-Qasas : Number of verses 88 - - page 386 - Part 20.
And she said to his [Musa's (Moses)] sister: "Follow him." So she (his sister) watched him from a far place secretly, while they perceived not.
And she said to his sister, "Follow him"; so she watched him from a distance while they perceived not.
(28:11) She said to his sister, "Follow him up. " So, she watched him from a distance in a manner that (the enemies) did not notice it." *13
*13) That is, the girl walked along and watched the floating basket in such a manner that the enemies could not know that she had anything to do with the child in it. According to the Israelite traditions, this sister of the Prophet Moses was 10 to 12 years old. She followed up her brother intelligently and cleverly and ascertained that he had been picked up by the Pharaoh's household.