The child in the Basement

She can hear her, she's there, her long salt and pepper hair packed in a bun atop her head, with her forest green-eyes staring straight at her, she can hear her, she's smiling, she said her name is Ailsa. That's not Genevieve first time seeing her, but that's the first time she's talking to her. Pretty, that's what came to her mind. She Can HEAR her.

"VieVie!"
Came a voice from above where Genevieve is.
She doesn't know maybe she's tired of hearing that name or if she's happy, but sitting down, she realized she's alone. Ah!, she left, Ailsa left.
Clair told her no one is named Ailsa in the house, that it's only her, Genevieve and Mark that's in the house, but Genevieve knows that she sees Ailsa almost once every two days and today was her first time talking.
But??? Who's Ailsa? Ah! But Ailsa can hear her?!