A: Upon issuance of the divorce decree and marriage, you can then file the FORM I-130 with USCIS on behalf of your spouse and her daughter. After approval of the relative petitions by USCIS, the cases will be transferred to the National Visa Center (NVC) where you and your spouse will present additional documents. After processing the cases at the NVC an appointment will be scheduled at the U.S. consulate in the home country for the issuance of the immigrant visas.
A: I am so sorry that you and your son were involved in an accident at the mall.
The incident that you have described, however, is not an event that can be classified as a crime that qualifies you for the U visa.
You can visit with a qualified and experienced immigration attorney that can assess other options that may be available to you.