Example: Camp or exercise take a walk together , ride bikes.
Also, the relationship can grow into an in-person one if both parties desire it.
How can you show her that? Think about it, do you change every conversation into something about yourself? Why do you sometimes crave tomatoes on rye bread while I feel like grilled cheese on white? They can still apologize without appearing weak by just admitting what they did wrong and what they will do to fix it.
You be clear and open about your desires and let him know he can do the same.
The roleplay can be impromptu or can be decided well in advance by the couple.
Dom-sub relationships are just like any normal relationship.