Even Delhi, and tourist places in and around Delhi, can be relatively safe for solo women travelers provided they choose the right place to stay, and the right people to accompany them or organize their local tours. For example, Women's Bed & Breakfast Homestay with a View in Delhi's NCR is one such recommended option.
I do not know what made writer to feel these places safe. People are good ? security is tight ? culture ?
She may write her next article on the same safe places in negative list if she face a bad man or bad man or experience. It is totally depnds on which remote areas you are traveling and with whom you are moving ? If you look strong in mental and physical ( additionall with arms) , no one dare to touch you
wherever prostitution is legalized, or atleast easily u can get them, those places are safe for women. only where it is not easy to get them for money, they do trouble visitors.
You should also add Tawang , Arunachal Pradesh . It is very safe for women and all. But you should book your reservation before going there as there is no too many hotels.