Severa, while confirming she could accompany Lynch to the event, arranged for someone to investigate Lynch's specific identity and whether he had received an invitation to the President's event.
Such investigations for forces at a certain level might be as simple as making a phone call.
Severa soon received a satisfactory answer from the person she consulted: Mr. Lynch from Sabin City indeed received an invitation to the President's celebration event, inviting him to participate with a female companion.
Incidentally, Severa also briefly understood Lynch's current business affairs and why he was able to receive the President's invitation.
This curiosity quickly dissipated after learning about Lynch's current industries—the reason was simple, too inconspicuous to spark Severa's interest.