1)
To which man did she call?
1.
Rashi: It was the officers' Shali'ach.
2)
What is the meaning of "va'Tegalach"?
1.
Radak #1: The man shaved Shimshon. It says va'Tegalach (feminine) because she commanded him to do so. Metzudas David - a man normally shaves others. 1
2.
Radak #2: [She took the scissor from the man, and she shaved him.
1
Perhaps she did not do so herself, for she is not skilled at shaving, and she is more prone to wake him before she finishes. (PF)
3)
How did she begin to afflict him?
1.
Radak: Even though he was sleeping, he felt affliction and weakness while she was shaving him.