The family of Ariana Grande worries after his "stage failure on Mac Miller"

Ariana Grande has worried her family after being "collapsed on stage" by singing a tribute to the late rapper Mac Miller.

Nine months have pbaded since his tragic death at the age of 26, causing a fatal overdose.

He had a romance with Ariana, although they separated at his death, but the 25-year-old singer is still being hit hard. She again shed a tear for him during a performance in Pittsburgh, Mac's hometown.

Ariana paid homage to Mac in the lyrics of her hit song, Thank U, Next, and she plays a medley of her music before her concerts.

Wednesday night was the first time Ariana sang the song in Pittsburgh and the enormity of that personal moment was not lost to the singer.

During the show, her emotions swept over her and Ariana was killed while she was unable to sing the phrase "I'd like to be able to say" thank you "to Malcolm" (who was the real name of Mac Miller).

While she was suppressing her tears, the crowd sought to lift Ariana and encourage the singer's encouragement, while her singers supported the main vocal tasks.

The night was difficult for Ariana, who was overwhelmed by emotion in the first issue, Raindrops (An Angel Cried).

The mourning singer had asked that an empty place be reserved for Mac in one of the closest rows of the stage.

Sources close to Ariana told Radar Online that her family was beginning to worry about her well being, as she had had some emotional crises lately.

They said, "Of course her family is worried, she has so much on her plate and she tried to reconcile everything while trying to make an appearance of personal life.

"Ariana has been so hot and cold lately and no one knows what version she's going to have and for now, she's more unpredictable than ever."

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