Fake online gambling

Hello! My grandma, who is in hospice, is addicted to online gambling and has gambled away a significant amount of money meant to support her and my retired grandfather.

Do you have any suggestions for online gambling including iPhone apps, where it is 100% impossible for her to put any money on anything? Also do you have any suggestions for parental controls that we can put on her computer so she can’t access sites that let her gamble real money?

Thank you!