I don't think you can claim to be insulted when you start in on the Bernie Bro slur. It was started in 2016 and has been framed as a campaign feature of his but doesn't square with reality. His coalition was always a multi ethnic, multi racial, etc, etc. Ditto supporters of Sanders being mean.
Her choice will be hers and will have ramifications on the race between two very different politicians. One will fight for progressive ideas the other the status quo. You'll have to pardon me if I draw a conclusion from what her decision will mean about her politics.