But recently she had begun to doubt it.
The momentary surprise and then the bubbling anger underneath Diana's calm façade was the only confirmation Clara needed for her doubts.
The trigger for her doubts had been her sister's words. Violet had planted the seed that she had been nurturing in her mind all this time and finally she had been able to confirm her suspicion through the twisted expression on Diana's face.
During one of their sisterly conversations, Clara had revealed her insecurities about Zach to Violet. Clara had been afraid that Zach wasn't interested in her at the time. On top of that, she had to deal with two other women at the same time, namely Christina and Diana. She was unsure of her chances and sought Violet's opinion on the matter.