Zeus made a thoughtful sound in the back of his throat, both in regards to his granddaughter and to Styx's son. Though, the former was far less an important matter in comparison. Harmonia's emotional distress did not put him and the mountain in various levels of... danger. That was open to interpretation, depending upon someone's opinion of him and of Olympus.
“If so, I would think personal enough that it has not spread into his siblings. Other than having to come up with some rather feeble excuses for his absences on his behalf occasionally, I do not think they really know what is going on either.” He lifted his glass, sipped and set it back down. “Bia has the worst poker face of the lot and she appears concerned.” Which was not a good thing at all. Because that meant escalation without his fixing it.
He sighed. “I do not wish to push, even with minor inconsistencies in his work as everyone has bumps now and then, things that are worked out on their own... however,” Zeus looked up, “not everyone has a mother I have sworn an oath to I cannot break.” Which was quite the oath. Styx enforcing it, regardless the circumstances would put Olympus at risk. If nothing else, the chaos that would ensue over who would take over would cause such civil unrest the mountain would implode upon itself.
“At the same time,” Zeus countered, “he has been unfailingly loyal to us... something I cannot say for most of this mountain, so I do hate to press him. But...” The look this time, was of caution, “given his ability, if there is any anger there or anything else building that might have risk for an emotional break... we may have bigger problems on our hands than an angry river goddess and a pitcher of her water.”