[ ] Sacred Matrimony [-10 Will, 5 Credit] (Discounted) - Support doesn't suffice, not for you. Mona desires friendship? Offer something a step beyond that. Utilizing a sacred ritual and your experience with the Connections-Which-Span-the-Worlds, you'll indelibly link your souls together. Actual marriage or relationship is optional; something to consider.
This linkage causes a permanent mutation of your Sanctum Aspect. Its mechanics change significantly, as the Abyss becomes inextricably conjoined with it. The valence of most of these changes is net-positive, as your Sanctum will become innately mobile and even more excellent at concealment and other things associated with the Abyss. Furthermore, it causes your Sanctum Aspect to gain an immediate level, and discounts future purchases of Sanctum levels and Techniques. The Abyss is strong with this one.
From the resonance of your relationship, Mona will develop some abilities reflecting the Tarot of the High Priestess - and with your deep Connections, you'll always have access to a fraction of them, and she, access to a fraction of yours. As a new ally, she'll never lag exceedingly far behind you in power, although she'll be focused on much subtler magics and powers than you. This rite will also prevent betrayal and link your fates to each other. If you're open to it, you can eventually explore an actual romantic relationship, too? Although that seems a little premature at this stage, given you've only barely just met...
*Mona is an eager proponent of this herself. (She's not much older than you, for the record.)
*Gain a small kingdom, even more artifacts, even more followers, and a bashful wife who didn't expect this outcome (a proponent that doesn't expect acceptance!)
*Gain a new Arcanum Technique: Lord of the Abyss, reflecting your mastery over it and the implement magics wielded by the witches.
*Ensures with a hundred percent certainty you'll be able to take everything here with you on graduation.
*+++++Mona.