When he walked inside the hospital alone, having taken care of Marissa with the instruction to keep her at his villa, Giovanni tried acting like his normal self when he saw his mother standing outside a hospital room which he figured out was his father's, before making his presence known.
"Mom." He called for her attention, and got that of hers and two other guards who were keeping watch on the room, before Amrita walked over to hug him, as she bawled her eyes out but it didn't troubled Giovanni that his father was in the hospital, or that it was something serious.
He brought this upon himself, and for the fact that grandfather was not here yet could only mean, that he too was probably in hiding or trying to fix things up from the message his father had, having seen that there's no news yet about his accident.