The Midrash Says Moshe Rabainu was born circumcised.....so had did Batya not notice that he was a Jewish baby?
Moshe Rabainu Born Circumcised
Posted 09 June 2014 - 09:18 PM
She had yocheved as his nursemaid, she presumably did all that. And, as the mitzrim had gotten circumcised under Yosef, it's possible some continued it for health reasons, though i doubt it. Though I think there was a midrash suggesting others new he was from the hebrews but didnt see any reason to worry.