Maisie had never thought Ava Kelly could be alive. She had strongly convinced herself and everyone around her as Ava Kelly is dead. Hence she never expected to be addressed as 'mom' by the woman named Aarvi Evans.
So the thoughts of Aarvi Evans being Ava Kelly started to appear in her mind. In the past, Ava Kelly had nothing and she was too young. Now, Aarvi Evans has everything and she is much more powerful than them.
She didn't want to see Ava more powerful than her. She wasn't ready to accept that, "No… No, you are not that Jinx." She still didn't utter 'Ava' name.
Aarvi was glad Maisie didn't give her name. Else her name would have been 'Jinx' instead of a curse.
Slowly it clicked in Maisie's mind why Dax was going roundabout pressing them as friend and friend. He was from Skylar and Aarvi is the president of it. All the while they were busy thinking about how to swindle money from Hayden, they didn't even think of different possibilities.