Ella hated that Calista had betrayed her because she had no reason to lie to her even though it could be considered a harmless one.
It didn't hurt anyone but it made Ella feel stupid that someone of her level had genuine interest in her.
They had stalked her and realized that she not only knew Kyle but there was a chance that she was intruding in his personal life.
Ella knew that she could potentially be a stalker and used her to get closer to her prey.
After what happened to Kyle, there was no way she was going to be the one to put him in danger.
She didn't know this girl's intention but Ella knew she had to let Kyle know so he could decide what to do on his own.
She owed him that much with all that he had done for her, she would never have gone home and gotten the closure she needed if he didn't urge her.
Ella was glad he did because she overcame her biggest fear and was reminded that she was enough.
