B2 Visa Widowed

Hi,

I am applying B2 visa for my widowed MIL. I have read many negative experiences online. I am very worried. Will it be tough to get visa for a widowed person or is it just a matter of luck?

(She gets income from house rents and agriculture.)

Thanks.

I would say it is more about luck. Does she have other family in her home country like other children?