Expecting?

When Santiago and Persephone reached Valencia and Nash's house, they were stunned to see Valencia sitting on the steps of the gate, her hands holding her head. Her face appeared ashen as if she was lifeless. 

"What happened, Val?" Santiago asked his sister as he took the seat next to her, rubbing her back. She leaned into his embrace as she gazed up to look at her brother. 

"Did Nash and you fight?" Persephone asked next. She hadn't seen her best friend so lifeless before. 

Valencia shook her head. "I'm nauseous. Been throwing up for a while." 

Persephone's mouth formed in an 'O' as she sat next to Valencia on the other side and grabbed her hand in excitement. "Wow. Congratulations. I'm so happy for you guys." 

Valencia and Santiago both scowled at her. She has been throwing up to the extent of passing out and here Persephone was congratulating her. What was wrong with this woman?!