"Oh my," Viktor said, chuckling and shaking his head. "Tsveta once got into Mikhail's entire ink supply. The entire supply. Including the charmed stuff that resists evanesco and such, for contracts and all. I vill let you imagine that outcome," he said dryly. The things kids managed to get into were numerous and unknowable.
"You are likely right," he told her. Such truths were usually somewhere in between the two extremes. "Hmm, true, true," he murmured, munching idly on a chip as he thought. His dark gaze honed back in on her after a long moment. "Vhat if you could come up with a... how do you say here... a diagnostic spell, like some healers use, to study the bond?" he said slowly, sounding the idea out loud to her.