Santana cares about Britt, but not enough to skip practice, because what kind of precedent would that set when Santana needs to go out and do other college-related things? Would she stop living her life and never leave her dorm room because Brittany is sad and wants to Skype? Granted, something extreme like death of a family member could warrant Santana’s undivided attention, cheerleading practice be damned, but it’s about balance, and Brittana have a lot more of that than most people give them credit for.