The reason she doesn’t go to Beis Din, as clearly stated in the poskim and Gemorah, is because she shouldn’t go outside the HOUSE.
Max well, Where does it CLEARLY STATE that a woman cannot go out of the house?
Such a statement would contradict
1. Rambam (Hilchos Ishus 13:11): A man must give his wife clothing like women normally wear outside in order that she can go to her father or a house of mourning or Simchah. She may go to these places to bestow Chesed to her friends and relatives, in order that they will come to her. She is not a prisoner who may not come and go. However, it is degrading for a woman to always be outside and on the streets. A man should prevent his wife from doing so. She should go outside once or twice a month, according to the need. The beauty of a woman is to stay inside – “Kol Kevudah Bas Melech Penimah”.
i. Source (Magid Mishneh): Bereishis Rabah (45:5) says that when the Torah discusses the detriment of women, it says that they go out – ‘Va’Tetzei Dinah”. The Sifri (Tetzei 242 (23)), regarding a Na’arah Me’orasah who was enticed to Zenus, says that a breach (going out in the city) calls to the thief. Bereishis Rabah (8:12) reads “Kivshuha” like ‘Kavshah’ to teach that a husband should prevent his wife from going out too much.
15. Gitin 12a (Beraisa): If a wife was exiled to a refuge city, her husband must feed her. He can tell her to feed herself from her earnings only if she earns enough to feed herself.
16. Question: If she can earn enough, this is obvious!
17. Answer: One might have thought that due to “Kol Kevudah…”, she need not work and he must feed her. The Beraisa teaches that this is not so.
Miforshim ARE talking about honor
5. Rosh (Shevu’os 4:2): The Ri ha’Levi learns from our Gemara that we do not disgrace an honorable woman to go to Beis Din, due to “Kol Kevudah.” Rather, we send a Shali’ach of Beis Din to hear her claims. The Aruch and R. Chananel agree. The Ramban and Teshuvos of the Rif and Rav Sadya Gaon do not allow this. The Rif allows only that Beis Din send scribes to record her claim. The same applies to a Chacham for whom it is degrading to argue with Amei ha’Aretz in Beis Din; his honor is greater than a woman’s.
Thanks Kasha for your sources.