What would you do if you saw a stranger crying?

Almost a year ago, i was having my break at work, sitting in front of the staff entrance on the street... as i was sitting a woman alone in a car pulled up and parked facing me, her face looked tired... after a bit time i thought like "she should have already got out of the car" and as i was looking i saw her crying so hard... at that moment millions of thoughts roamed my head, like should i offer her some water and tissues, or should i ask her if anything is wrong, or offer to listen to her venting up... but at the same time i didn't knew what I should do... and the more minutes passed and the more anxious i got... then after like 20 mins crying she just started her car and drove away... until this day, i keep remembering this memory and still wonder if i should have done anything kind to her or just leave her alone, i feel like guilty because i didn't do anything but stand still.

Also such thing happened again like 6 month ago, in the same spot, but different woman, but she was a bit far from where I'm sitting but i saw her... (Still didn't do anything because i don't know what i should do in such cases, or how she would take it if i came up to her where I'm a random stranger...)

What do you do in such case? And what should i do if such thing happened again with me?
What would you do if you saw a stranger crying?
Post Opinion