If you think your child needs you, maybe experiment, tentatively trying different ways of being there for her and making sure she knows you are there for her and want to do what she wants and not what she does not want.
When a child wants us to buy something we find morally objectionable, we have to remember that it is our child buying it, not us. You have no jurisdiction over your children. What they do can’t be morally wrong for you.
Children have to do what they themselves think is right, with no pressure whatsoever—that’s what non-coercion amounts to—but they also have a right to be told morality as best we see it.