I wish I was a fly on the wall in the same room as Elizabeth Warren when she heard this.
By the way, it's been FIFTEEN days since she said the Democrats should make Single Payer their next priority, fifteen days that she could have walked her talk and introduced a Senate version of HR 676.
I predict she'll NEVER introduce it or co-sponsor it if someone else does.
But she must be fuming. She kept her powder dry and didn't support Bernie in '16 so she wouldn't alienate the party and even endorsed Hillary before the Convention and then campaigned for her. Then she triangulated to taking Bernie's signature issue, Single Payer, and making it her own to win over the Progressives. (Without actually introducing the bill, thus making the establishment Dems happy.) She was certain she was uniting both wings and was a shoe-in.
But that rascal Bernie isn't going to let her 'have her turn.'
I don't expect she yelled and cursed the way people say Hillary acts when she's angry in private. I expect she got very silent and fumed so intensely no one wanted to talk to her.