According to TMZ, Sara Stokes, formerly of Da Band, got into it with her husband Tony at their Moreno Valley, CA home when she stormed out of the house.
Then, while leaving, she tripped, fell and hurt her head. She accused Tony of doing it.
Sara allegedly grabbed a knife and stabbed her husband in the arm while their three kids watched, said the report.
Cops were called and Sara was arrested for assault with a deadly weapon and domestic violence. Currently, the D.A. is deciding whether to charge her.
Her lawyer told TMZ, via a statement, that the couple were having "fun" before the incident took place.
"Sara and Tony have a very passionate and loving relationship that on August 2, while having an evening of fun, she slipped and fell, hitting her head heavily on the ground and somehow in the process of helping her Tony got injured," said Eric Kayira.
Stokes was a member of the gold-selling group, Da Band, constructed by Diddy on his MTV reality show "Making the Band." The group consisted of rappers Chopper, Fred Watson, Babs, Ness and reggae vocalist Dylan.
Da Band was eventually disbanded during the show's finale, and each member -- including Sara -- went on to pursue solo careers.