What visa is suitable for my Niece?

She should apply for the S2 type, but I'm not sure whether she will get it, as the S2 type is issued to those who intend to go to China for private affairs or to spouses, parents, sons, daughters, spouses of sons or daughters, brothers, sisters, grandparents, grandsons, granddaughters and parents-in-law of the foreigner who is working or living in China.