Exactly.
Perhaps, but that also depends on how he sees Tranquillina. She is also wracked by self-doubt over never having completed the Tytalus gauntlet. She's spent the last 30 years as the impetus to drive her work ethic[1] in the lab. It could very possibly be that Cumhachd has seen the poor child torment her self too much and is here to put a stop to it. Or at least put herself into a position to be accept all the accolades when Tranquillina acknowledges what she's been doing.
[1]See the very last paragraph.
I'll road map where this is going a bit. Until you came along, I didn't really have much behind Cumhachd, besides her being a Tormenting Tytalus I need to figure out how to put together. But two magi who share a common mater being part of the same covenant... It's a grand Tytalian plot. And that's not even then interesting part. 
"You don't honestly think that you and Eskil ended up here by some, some... accident, do you? Do you?! Oh, my dear boy, you are here because I arranged for you to be here, and her too. You think Tria stole her from me? Well, she did, but that was my plan and design all along. Me! I am the one! I set the precedent for a Trianomae to steal an apprentice an apprentice. Do you realize what a gift that was? And she has done it again. And then again! How many apprentices found the right master because of me? If only other Trianomae had the courage to follow her lead. And my fingerprints are on every one of them." Cumhachd lays out the Grand Plan, waiting for Stultus to see the implications she's left unspoken.