+1 for pointing out 1) the designed dopamine addiction cycle, 2) complete cutoff is required, 3) providing alternatives, and 3) Phase 2 rewards/options. It may be worth looking for a possible underlying cause -- why did she start playing the game? What is she compensating for? This MAY require real psychological intervention, which is absolutely worth the time and money if she needs the help. If she is addicted in this way and to this level, please realize that it's not your fault. Talk to her. —
jvriesem 37 secs ago