What is the "Brachah"?
Radak: It is the gift, like "Kach Na Es Birkasi" (Bereishis 33:11).
Why did she say "Hevi (masculine) Shifchasecha (feminine)"?
Radak: The youth brought it 1 , but she was the primary giver.
Malbim citing Mahari: It should be considered that Naval brought it, for it was from his money.
It seems that this is Radak's intent. However, she sent it through more than one youth! Perhaps the youth who told her was more primary than the others. (PF)
What is the meaning of "v'Nitnah la'Ne'arim"?
Rashi: Without the prefix Vov, it would be past tense. Due to the prefix Vov, it is future - will be given to the youths.
Radak: It will be given to them honorably.
