Cassandra Fay

Cassandra Odell (née Fay) is a veterinarian at the Hudson Vet Clinic, formerly a vet assistant at the clinic.

When she first appeared she started seeing a guy, Jeremy Hughes, who show jumped. Jeremy drugged his horse, one night while Cassandra was working at the clinic, causing Ty to lose his job. Cassandra eventually fesses up about leaving Jeremy alone in the clinic to pick up food.

Cassandra returns in season 7 looking for a summer job. Lou hires her to help with the dude ranch. Where she is rude to the guests.

Eventually Scott, with Ty's recommendation, hires Cassandra again on probation.

She and Caleb Odell eventually start dating. Their relationship starts to become more serious. At first, Caleb wants to commit, while she wants to keep things casual, so they fight a lot. Ty then makes her see that she cares about Caleb just as much as he cares about her and that she wants to be with him, so they reconcile. She and Amy start to become friends when they realize that both of them prioritized work instead of friendships and are lonely sometimes. Cassandra starts to feel nauseous and decides to take a pregnancy test while at Amy's loft. The results are positive. The next day Caleb comes by to fix something in the bathroom at the loft and finds Cassandra's test, mistakenly thinking that it's Amy's. A while later she gets worried that Caleb is seeing someone else, which makes them get into a fight. But what she didn't know is that when Caleb invited her to go out for a night, he was going to propose. When Caleb tells Amy what is going on, she tries to help the situation. She ends up telling Cassandra that Caleb is going to propose to her and that is why he has been acting so weird. Caleb proposes and Cassandra says yes. They get married at the end of season 10.

In the Season 13 episode The Art of Trust, Cassandra reveals to Caleb she is pregnant after the couple had endured fertility issues during Season 12.