Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh.

 

A widow can go out of her home during daytime if there is a need for this such as shopping, attending classes, etc. She can also go out of her home during night time in cases of necessity such as going to work.

 

This the view of the massive majority of Muslim scholars who based their view on the authentic report of Mujahid who narrated that some men were martyred on the day of Uhud and their wives came to the Messenger of Allah (peace and blessings of Allah be upon him) and said: O Messenger of Allah, we feel scared at night; can we stay in the house of one of our neighbors, then in the morning we will go to our own houses? The Messenger of Allah (peace and blessings of Allah be upon him) said: “Chat together in the house of one of your neighbors, then when you want to sleep, each one should go to her own house.”

 

Allah Almighty knows best.