Her attorney confirmed that she is undergoing treatment for drug addiction. She reportedly checked in Monday night.
This is Mueller’s latest in a series of stints in rehab — TMZ.com reports that she has now entered treatment facilities 19 times.
Yale Galanter, Mueller’s attorney, told TMZ, "Brooke was uncomfortable with the way Adderall was making her behave." Adderall, a prescription medication, is a psycho-stimulant.