It’s been a rough year for Ariana Grande, but it seems like the singer may be able to move on now that she has learned Mac Miller’s cause of death. According to Radar Online, the rapper died from “mixed drug toxicity,” that included “fentanyl, cocaine, and ethanol.”

After she learned this new information, the “No Tears Left To Cry” singer felt “much relief, as it is the closure that she needs to heal,” a family source told Radar. Since Mac’s death, the source said that the singer has been in “intense” therapy to cope with the tragic loss.

Ariana and Mac at an event together
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On Nov. 5, Ariana was honest on Twitter about how much therapy has helped her. A fan tweeted at Ariana, “who is ariana’s therapist and are they accepting new clients.” She replied, “lmaoaoo this is funny as f–k but in in all honesty therapy has saved my life so many times. if you’re afraid to ask for help, don’t be. u don’t have to be in constant pain & u can process trauma. i’ve got a lot of work to do but it’s a start to even be aware that it’s possible.”

Ariana has had a lot on her plate since Mac’s death, including navigating her broken engagement from her ex, Pete Davidson. The 25-year-old and the late rapper dated for at least a year and a half until they broke up earlier this year. In September she posted a heartfelt tribute to him on her Instagram page. She wrote, “I adored you from the day i met you when i was nineteen and i always will. i can’t believe you aren’t here anymore. i really can’t wrap my head around it. we talked about this. so many times. i’m so mad, i’m so sad i don’t know what to do. you were my dearest friend. for so long. above anything else. i’m so sorry I couldn’t fix or take your pain away. i really wanted to. the kindest, sweetest soul with demons he never deserved. i hope you’re okay now. rest.”

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i adored you from the day i met you when i was nineteen and i always will. i can’t believe you aren’t here anymore. i really can’t wrap my head around it. we talked about this. so many times. i’m so mad, i’m so sad i don’t know what to do. you were my dearest friend. for so long. above anything else. i’m so sorry i couldn’t fix or take your pain away. i really wanted to. the kindest, sweetest soul with demons he never deserved. i hope you’re okay now. rest.

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We’re rooting for you, Ari!

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