Is it permissible for a Muslim woman who cannot perform her prayers on time due to concealing her Islam, to combine the Maghrib and Isha prayers with the Asr prayer, and does the ruling for a traveler regarding combining and advancing prayers apply to her?

A traveler is not permitted to pray Maghrib before its appointed time. However, it is permissible for them to combine Dhuhr and Asr prayers, and Maghrib and Isha prayers, either by praying them earlier (جمع تقديم) or delaying them (جمع تأخير). If a Muslim woman fears harm to herself due to her family discovering her embrace of Islam, then it is permissible for her to combine the two prayers during the time of one of them. The time for Isha prayer extends until the break of dawn. If this is not feasible and she fears harm, then she should pray according to her capacity, performing what she is able to of the prayer's conditions and pillars, and what she is unable to perform is waived for her. Shortening prayers (Qasr) is not permissible for anyone other than a traveler.