...When you say that I should make it clear that it's her decision and nobody else, does that also mean we give them freedom to choose what they want? In your opinion, when should parents have control over things? They say authoritative style of parenting is still the best but I find it hard to balance between letting them decide on their own or making them listen to you.
It all depends on what we are talking about and your child's age. As they grow older we should have less things to 'impose' on them.
In this case we are dealing with 'her' participation on a contest so it is perfectly right and highly recomended for us to guide or give our opinion but i will not consider that we have to show our athority 'forcing' her to participate. Just try to persuade her. She will do much better in the contest if it is 'her' decision.
That is my opinion but maybe i am wrong. Keep us inform how it went.