Yes, my point being that she should have been able to easily manage the task if she had EVER bothered to make the effort involved. I'm convinced other AS would have looked down on someone who should have easily been able to earn that 3rd name, but didn't have the strength of character necessary to achieve it. If Tel Janin Aellinsar could earn it as was what amounts to a professional athlete and Nemene Damendar Boann could fake it well enough to fool the system into not seeing her true nature, Mierin Aronaille should have had no problem.

I'd go so far as to say that even people who had not earned the 3rd name would have looked at her as an anomaly since it should have been something easily within her. To your point Barid Bel Medar, and Tel Janin Aellinsar for that matter, obviously saw the benefits of going through the process... Lanfear wasn't even aware enough to have figured out that it was a necessary (critical even) step for her to make if she truly wanted power/fame. But then I don't think Lanfear really wanted anything if she had to actually earn it ... like a child she expected things to be handed to her.