Women are permitted to combine and shorten نمازs during حج in exactly the same manner as men. There is no distinction between men and women regarding the concessions of combining (jam) and shortening (qasr) نمازs during travel and at the specific حج sites. All scholars agree that the rulings of combining نمازs at عرفات and مزدلفہ apply equally to women.
At عرفات, all حجاج — men and women — combine Dhuhr and Asr نمازs at the time of Dhuhr (jam taqdim), shortening each to two rak'ahs. At مزدلفہ, they combine Maghrib and Isha at the time of Isha (jam ta'khir), with Isha shortened to two rak'ahs. Sheikh Ibn Baz confirmed that these concessions are Sunnah and apply to every حاجی regardless of gender.
Sheikh Ibn Uthaymeen further clarified that women who are traveling for حج may shorten the four-rak'ah نمازs (Dhuhr, Asr, and Isha) to two rak'ahs throughout their journey, just as male travelers do. The shortening applies when they are considered travelers, and the combining applies at the specific حج locations as part of the Sunnah of نبی کریم. Women who are residents of مکہ مکرمہ shorten at عرفات and مزدلفہ due to the Sunnah of the rite, not due to travel.