What kind of meeting is it?
Does it matter? Seems they may have something she wants, and something's not working so far. The other person can't be changed, there's lots of little things people can change about themselves which can work in their favor during formal meetings. People generally want to be helpful, so clearly stating a need for their help is of benefit, asking for help in front of others even more so. People usually best remember the beginning and ending of encounters, so needs should be expressed early in the conversation. Wear a white shirt; white is the color of innocence. Women who hold their chin high are viewed as aggressive. If possible, avoid sitting directly across from anyone; it's the position of an opponent. If there no choice but to sit in opposition, then move the chair over a little before sitting and turn it at a slight angle. Nod when asking questions if wanting them to agree, shake the head when asking if wanting them to say no. A person's own body language can affect how they feel, smiling can simply make a person feel more calm and agreeable, and that reflects to other people.
Yes, it does matter a bit.
If it is a meeting ordered from above, that will have an effect on your income, you will be there in a different way than when it some social gathering you just could not avoid going to.
Over all, you can't change the behaviour of other people, but you can change your own way of being. In that change of your own behaviour you may cause an imbalance in how things always were. Thus causing a reaction need in the other. That might be a reaction aimed at restoring things as they always were, or a new kind of interaction. No manipulation needed.
What IQ said, about stopping to try to blend in with the normal may be more than enough to make other people change their way of being. It does make life more easy.
