I would never try to steal a victory by trying to get someone disqualified for being this nitpicky of a rule but let's not forget the South Pasadena team is at fault here. She should have known the rules and not had it on, her coaches should have noticed it and told her to take it off and her team mates should have noticed and told her to take it off.
I'm sorry if this is coming across as negative but they had a chance to keep themselves from being penalized. I don't necessarily agree with this rule although I do know why it's there. It's easier to just say no jewelry and define it as anything on the body because that goes along with zero tolerance.
I tell my guys all the time don't put yourself into a position where a sporting official can screw you through a bad call or nitpicky rule.
I sympathize with her and think she is very mature in how she's handling it. The Monrovia coach should be ashamed for winning by doing that. But South Pasadena could have avoided the whole thing by taking the bracelet off. Each player is responsible for their dress and it's the coaches job to be responsible for how their players dress.