Parashas Shemos
וַתֵּתַצַּ֥ב אֲחֹת֖וֹ מֵרָחֹ֑ק לְדֵעָ֕ה מַה־יֵּעָשֶׂ֖ה לֽוֹ׃
And his sister stood at a distance to know what would be done to him.
Torah Temimah points to Sotah 12b (verified).
ותתצב אחותו מרחק — \ldots
English: Miriam stationed herself at a distance to observe the outcome of her earlier prophecy.
Custom
Miriam’s watchfulness links her earlier prophecy to the moment of Moshe’s rescue.