Source? Not questioning you, I would just like to see what you're referring to. I did a quick search of "Jane Sanders So Many Choices 2016" and I couldn't find anything about it. I saw that she retweeted a video with Bernie saying, “We’re not a movement where I can snap my fingers and say to you what you should do… You won’t listen to me, you shouldn’t, you make these decisions yourself… "
https://heavy.com/news/2016/09/why-did-jane-sanders-tweet-retweet-bernie-sanders-do-not-to-listen-to-me-video-clinton-endorsement-watch-youtube/
also just for fun cus I was reading some old tweets while looking for what you were referring to,
aged like a fine wine...