"There's probably some deep reserve in this ancient-wizard-just-starting-at-relationships that can't be overcome just by ordinary exercises for talking to your partner -- to the extent that trope-based reasoning works here at all, though, in my experience it usually works to some degree. But this does sound like there's potentially a lot of room for just talking with Ramona more, and updating her more on how your way went, and generally trying to imitate the greater amount that Ramona talks to Leareth. If I'm right that Ramona is in fact being more forthcoming, usually. I would conjecture that this is the sort of thing that Ramona had in mind under the category of 'how to basic relationships' -- if you're not talking to each other much or often, if you're not sharing large amounts of your mental worlds though not all of them, that's a weak pillar in the foundation. I would wildly guess just from observation so far that this is the central visible problem in your current relationship; and even if there's some later plot development on which hinges fixing the whole problem, which itself may or may not be true, your relationship has to last until then."
"Leareth, I'd put to you that you may be thinking in terms of what is safe to tell Ramona. I'd float the suggestion -- possibly for rejection as obviously stupid, just putting the thought out there -- maybe you should actually be thinking in terms of Ramona being a very useful tool for your altruistic ends, and not just your selfish wants; and you may need to sharply change and adapt to your changed circumstances, by talking much more to her, in order to reach the necessary level for preserving the future good things your world can get from Ramona."