I don't think this is a good place to work in the long run. She could barely learn anything useful to apply for better jobs 😓 I think she should still keep applying for similar jobs and keep taking interviews.
Bro I don't even care this is an informal work. there are tons of works out there like this (don't really know for korea though). She can at least save up some money and then maybe look for other jobs in the future. still better than nothing.