As salamu alaikum,
Could you provide advice as how sisters on their menses can benefit from the last days of Ramadan?
Wa alaykum as salaam wa rahmatullah,
Insha'Allah this email reaches you in the best of every state.
Jazakillah khayr for your question. Sisters on their menses can do abundant dhikr, du'aa, salawaat upon Nabi (saw), istighfaar, they can reflect, listen to Qur'an (without reciting), study books of tafseer, seerah, and hadith. However, I would suggest sticking to the understanding of the Qur'an since this is the month of the Qur'an and great scholars of the past would put the rest of their deeni studies aside just to concentrate on the Holy Qur'an. Basically everything can be done except prayer, fasting and recitation of the Holy Qur'an.
Whatever you do, just correct your intention and try your best and Allah Ta'ala is so generous and He is al Kareem that He will reward you abundantly for every single action and intention. Tawfiq, insha'Allah
Please let me know if I can help in any other way and please remember us in your du'aas