Question for you or others with similar viewpoint:
If you have zero intention of tipping, why even bother logging in with an account? If someone sits and watches, 90% of the time, just be a guest. When you feel the desire to interact, then log in with your account.
Personally, even that I have issues with, as I always try to tip even if I'm there for more than a couple of minutes. It may not be a room I like, or won't visit again. But, I feel that even a couple tokens tipped is better than nothing for the couple of minutes of viewing. If she messages you with a "Thank you", just leave it at that or respond with a "You're welcome" and be done.