See, this is what we mean when we call out NB for her bias. Taeyeon hasn't said SHIT on SNS about Jessica. If you remember they have a tense relationship, then her silence is actually fucking honest and not sly at all.
Don't try it with crying at the fanmeet, she's allowed to be emotional at stressful events especially when her two other members were crying too. If she was a monster/sociopath she would have no emotional reaction.
But yes, keep bringing up Taeyeon when she has nothing to do with anything.