TMZ has learned the troubled McCready went off the deep end late last week after getting dumped by her last boyfriend, and actually collapsed while on the phone with her mother. She downed a bottle of vods and pills in what we're told was a "suicide attempt."

She's headed to Arizona for treatment -- and a source says that was all Phil's idea. We're told he's taken Mindy under his wing as his own "personal project." As for whether or not she'll be on the show, time will tell.
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