So something occurred to me.
Of Cython's interests, we know that they are keenly interested in the degree to which deities may or may not be the same across different cultures and different identities. Has Mathilde ever actually explained to them that she has developed her magical sensitivity in a way that can not only sense divine energies but actually
identify differences between divine energies? Because that's a rare enough talent even Cython may not have it or have heard of it. And that sounds like an experiment they might actually be interested in participating in. We could cut a deal with them, "Hey, Cython if you can come up divine artifacts and/or locations that you suspect may belong to the same gods under different names, and Mathilde will sniff at them and tell you if they seem to belong to the same deity or a different deity."
1. This serves Cython's interest by helping to confirm their theories.
2. This serves Mathilde's interests in exposing her to more divine energies and allowing her to study them.
@BoneyM is there potential for trying to entice Cython into a joint research on that, a subject they're actually interested in? Mathilde brings the Avatar trait and Cython brings knowledge of accessible places to find divine energies and a better idea of what they want to learn from them.