What did Cassie do during her date with Mitchell on Day Three?

Cassie and Mitchell talked.... or at least they tried to. Cassie wasn't into talking about the Others, and she was very rude. Then she started texting Lizbeth, and again, Mitchell finds her rude, although this time she apologizes. Their date ended when Mitchell told her that he'd heard she wasn't into dating, and that he knew she was obsessed with Ben Parish..... Cassie was mortified.