Her university most likely used the ECTS credits system, where you typically complete classes making up 60 credits per year. In early years of my degree I took 12 classes a year each being worth 5 credits each but in final year I had 20 credit modules which had a bigger workload and more contact hours. It’s pretty common in the UK afaik. Ruby did a l dissertation module, and they’re usually worth more than a typical 5 credit module.
As an aside, extra curriculars and societies aren’t as important in the UK as they seem to be in the US. Most people just do them for fun. It’s not important to compete at a sport at any level and no employer would give a shit whether you did or not. It’s still silly to list sports on your LinkedIn though, regardless of whether you were competitive or not.