Tessa quickly came up with a name right on the spot, she didn't want Mr Landon to know her identity until they meet.
If Mr Landon sees her now, he would definitely think she came for revenge and that would turn this place into a messy zone because he would want to capture her, and Klaus and the rest would want to defend her.
She doesn't want a violent scene here because the chance of them winning was very slim, they were in the enemy territory so the enemy definitely had the upper hand.
"Thank you for waiting ma. Mr Landon will attend to you. Please take the elevator at the right"
Tessa's cheeks moved when she heard that, finally she would get to see Mr Landon privately and expose some of his evil deeds to him. It would definitely stop Mr Landon from coming after her again.
