Well, yes. There can be harassment from the family, the extended family, or the wider community if girls do challenge their parents and family members, and refuse to conform. There may be physical violence. Often more common is social ostracism, as they are rejected and denounced by the families and communities. That is often one of the reasons why victims don't leave in the first place.
That is why I think you must have measures in place so they are protected and given support when are brave enough to take these type of steps and go against their families and community.
It means that they must have services. They must have women's organizations within their own community that don't agree with those same value systems, who would protect them and give them alternatives, who would support them through the process, who would befriend them, and who would give them peer group support. Other survivors support each other, and that gives them the strength to carry on and not give up and go back to or continue with the harassment they experience.
With any measures you take, you have the risk of harassment, but that doesn't mean that we shouldn't take any measures at all. It is important that we do take measures to protect victims as we would for anyone facing child abuse, for example.