How would you feel if you were subpoenaed to testify against a sexual predator?

When I was 16 years old I worked as a lifeguard at a community college aquatic center.

During that time I worked with a 21 year old guy named Sam. About 6 months or so into the job he was fired and arrested for sexually assaulting 3 girls (probably more) including myself. After an internal investigation launched by the college and the local police department, myself and the 3 other girls were subpoenaed to testify against him in front of a closed grand jury.
How would you feel if you were subpoenaed to testify against a sexual predator?
http://www.theglobaldispatch.com/samuel-melthratter-former-oregon-lifeguard-arrested-for-sexually-abuse-three-underage-victims-35291/
How would you feel if you were subpoenaed to testify against a sexual predator?
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