Be an evangelist

Being a parent is hard enough, but passionately desiring to see your daughter and your son grow up to be servants of Christ is even harder. How do you handle a situation where your child is planning on doing something that will probably cause some waves, but it is a good thing to do?
My daughter is apparently an evangelist. Of this I am proud!! Still I am a little nervous. She is planning to tell people about Jesus at the school talent show using her ventriloquism. She was simply going to have her dummy (Carlos I think) tell everyone about Jesus. My wife is helping her do it in a more humorous way. Either way she is trying out for the talent show on Wednesday.
How do I handle this? I encourage her, and I get ready for battle. Satan can not be happy with this. To be honest, there is a part of me that hopes there will be a fight. I can't help but think that God would use that kind of a fight for His glory.
Well, let's just wait and see.