VPN services are useful when your location, as it is shown by your IP address is banned/prohibited by the platform but according to the sportsbet ToS it's not the case for Indonesia. And she doesn't seem to get any problem when she try to access sportsbet with her real IP address.
I don't know the Indonesian laws but in many countries, laws prohibit unauthorized websites too be available to the citizens but don't prohibit citizens to use those websites. That is to say only websites are likely to be punished, not the users. Moreover according to Doell, all indonesian ISPs are not blocking those websites.