If a man attends an early Shabbat minyan long before the latest candle lighting time (18 mins. before sundown, e.g.) and has started Shabbat before then, must his wife accept Shabbat at the same time that her husband does, or can she wait until she lights candles, later?
From Rabbi Kaganoff's site:
Rav Moshe Feinstein rules that the fact that a husband was mekabeil Shabbos does not require his wife to do so, just as his making a personal vow or oath is not binding on her (Shu’t Igros Moshe, Orach Chayim 3:38; cf. Shu’t Shevet Halevi 7:35, who disagrees). He discusses, at length, whether it is permitted for her to do melachah activities for her husband after he was mekabeil Shabbos, and concludes that it is proper that she does not.