Shea Thorne still didn't know what it was, but Milo Sinclair did.
A week later, it would be the Sinclair Group's anniversary banquet, and inside this envelope was the invitation.
He immediately realized that there had been an error with the invitation, using the Sinclair Family's private seal for the letter sent to Mr Thorne. His father probably thought Ariana had been flaunting him in her social circle too much; even though his face wasn't shown, it felt exposed, so he used the private seal.
The Sinclair Family's private seal is specifically sent to guests with personal relations.
Their family's private seal is an antique, and Mr Thorne is very knowledgeable. One look would raise his suspicions, and linking it to Shea Thorne's social media, he'd naturally find some clues upon careful scrutiny.
Unexpectedly, it became a point of suspicion for her father, and he discovered it.
