How do I document the other parent refusing me access to the child?

Your order states exactly when you are to have the child. Check your order again, send her notice in writing for the dates to which you are entitled, then show up at her house to pick up the child according to your schedule. Go to a nearby business and buy something, anything, coke, gum, keep the receipt. Tape the receipt to your calendar. Then do it again the next time you should have the child. This shows you were in the vicinity of the ordered pick up place at the appropriate time. In other words, this is evidence against the other parent for a motion to enforce visitation, or just for your motion to modify the visitation schedule. This can be fixed.