You appear to be reading 30-3-35 correctly, assuming that there is not anything else in the custody orders or parenting plan that would contradict. But, do review both the orders and parenting plan to see how issues like this are resolved -- who is the tie-breaker.
It might be a nice gesture to allow her some other evening if she actually does routinely work Wednesdays (though not necessarily the Friday), just to attempt to keep the peace and show that you are the "good guy" if any future dispute arises. And, make sure you document it via email.
If this is just one of many other problems, you might want to look into having a special master appointed.
Answered on Jun 07th, 2017 at 11:30 AM