1)
Did they know that the youth saw them, and would tell Avshalom?
1.
Malbim: Yes, due to Hashgachah. This is why they went quickly! It was also Hashgachah that (a) they came to the house of a man with a well, (b) the woman had mercy on them, and thought to put the Rifos on the curtain, and (c) she thought to say that they came, and passed.
