Lucien stops in the air in front of Alexa, who looks at Helena with an incredulous expression. "Grandma... is it really?"
"How can I prove to you that it's really me?" Helena asks as she looks at her granddaughter with a loving expression.
"I... I'm sorry for not believing... and attacking you..." Alexa is still very confused, but the black spot on Helena's cheek is proof that the tear she saw was real.
Helena, still in Lucien's arms, smiles. "It's alright, my dear."
The loving tone that Helena speaks activates all the memories that Alexa has of her, making her no longer have any doubts about that woman being really her grandmother.
But then Alexa gets worried about other things. First, she notices that Helena's appearance looks really bad. Fallen angels generally do not live more than a hundred years before rotting to death, and it has been much longer since Helena has suffered such a punishment, so it is evident that she is already very close to her limit.