H4U, I've been in the same situations. Whenever my W and I would attend social events; if I wasn't ignored, I was belittled. Although she would always play it off as trying to cute and funny. I think it was her way of telling her friends that I wasn't what she really wanted and at the same time placating me by, at least, introducing me to others. It's a big blow to your self-esteem.
Whenever I would mention how I felt, she would brush it off by making nice with me. BTW, this was usually done in conjunction with drinking, so I stopped going out and drinking with her to save myself the abuse.
Dear Married Crazy, this is completely unacceptable! A woman/wife needs to be put in her place and good when she shows disrespect for her husband like that. It is not cute nor funny and it usually makes others feel uncomfortable if they are worth anything. The same goes for a husband that would make his wife the butt of his jokes at a party. I would get her undivided attention about that and let her know that it better never happen again.....and drinking is no excuse. If she can't behave while drinking, then she doesn't need to do it.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
