The combination of a highly patriarchal society and an abysmally poor quality of education in Nepal means that boys and men view girls and women as inferior and treat them as such. One such example is viewing them as the culpable party for when they become victims of violence, as happened on social media over an incident involving the rape of an Australian woman by a Nepali man.
In the highly patriarchal Nepali society with very low level -- as well as low quality -- of education of the population, maintaining the status quo benefits the hill so-called high caste Hindu men, the social, economic and political elite.
Over 60% of Nepali women believe that a mother-in-law is justified in verbally abusing and threatening her daughter-in-law for any one of six reasons!
In the highly patriarchal society that is Nepal, it's not surprising that women have such laxed attitudes towards domestic violence. Addressing that requires a multi-prong approach, one of which must be providing quality education to the population.