If you will be forced to play though her route to continue the main story then you would have a choice to get intimate with her or not.That sounds like it conflicts with what you previously said
So can you easily avoid her route or at some point will the player be forced to play through her route to continue the main story? Being able to easily avoid her route would make her a side character or minimal friend path to keep things moving while the other is yeah, you can avoid her... for now