there is nothing on us website about sponsorship. They are very suspicious if she tells of her relationship at all. US officials are afraid she will marry him while i. USA as tourist, which entitles her to green card and eventual citizenship. They want her to apply for fiancé visa, which is more difficult and time consuming
I have a retirement visa. Converted from tourist visa, and extended several times. It is the Non O retirement. An OA Gotten in your home country requires a police report