NW represents the bank.
Who is the company that is asking you to sell it to an investor and translating for your mother?
Did you pay them and how did they find you?
Does your family have income coming in?
I would try and sell the home without this investor, who by the way, is taking advantage of you and your family and will profit immensely.
Sell it yourself, or with a Realtor if that is the case and keep all the money.
You definitely need an attorney to protect you. Try searching for one at
www.NACA.net . You can find a legal aid or pro bono attorney.