It's not surprising, considering the star had to block comments on her Instagram account after vile trolls blamed her for Mac's death, with fans leaving nasty messages including "This is your fault" and "You did this to him".
Ariana was also previously blamed for Mac's car crash less than a week after their break-up, when he fled the scene after wrecking his vehicle while under the influence of alcohol.
However, she hit back, insisting she was not his babysitter.
One fan wrote: "Mac Miller totally his G wagon and getting a DUI after Ariana Grande dumped him for another dude after he poured his heart out on a ten song album to her called the divine feminine is just the most heartbreaking thing happening in Hollywood."
And Ariana hit back, saying: "How absurd that you minimize female self-respect and self worth by saying someone should stay in a toxic relationship because he wrote an album about them, which btw isn't the case (only Cinderella is ab me).
"I am not a babysitter or a mother and no woman should feel that they need to be. I have cared for him and tried to support his sobriety & prayed for his balance for years (and always will of course) but shaming/blaming women for a man's inability to keep his sh** together is a very major problem. Let's please stop doing that. of course i didn't share about how hard or scary it was while it was happening but it was. i will continue to pray from the bottom of my heart that he figures it all out and that any other woman in this position does as well (sic)."
Where to get help: • Lifeline: 0800 543 354 (available 24/7) • Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7) • Youthline: 0800 376 633 • Kidsline: 0800 543 754 (available 24/7) • Whatsup: 0800 942 8787 (1pm to 11pm) • Depression helpline: 0800 111 757 (available 24/7) • Rainbow Youth: (09) 376 4155 • Samaritans 0800 726 666 • If it is an emergency and you feel like you or someone else is at risk, call 111.