Macias was arrested in Texas on October 26 on a misdemeanor driving while intoxicated charge.
Reps for the reality TV star say the 32-year-old is feeling "extremely remorseful" after she was hauled into the San Antonio Police department at around 2 a.m.
Blige mentioned her recent divorce from her husband and manager, Kendu Isaacs.
In 2009 Richardson’s sister Natasha died aged 45 after hitting her head while learning to ski, leaving her husband Liam Neeson to bring up their two young children alone.
The sisters’ father Tony was a bisexual film director who died in 1991 from an Aids-related illness.
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She expressed gratitude to people who shared her posts and to everyone helping look for the pooch.