A woman is supposed to light candles in the place where the family will eat Seudas Shabbos. What happens if there is a Simcha on Shabbos and the men and women will eat in separate rooms? Where should she light candles, by her husband or by the women’s’ section where she will eat?Rav Binyomin Zilber in Shu”T Uz Nidbiru (13:3) says that he once paskened that as far as the halachos of candle lighting is concerned there is no difference. However out of respect for her husband a woman should light in where the men will eat. He then goes on to say that he now thinks the best thing to do is to make a bracha and have in mind to light in both places and then go light in both places without talking or making any hefsek in between.
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There really is no question as a man’s wife should be eating next to her husband at all the Shabbos meals.