Yes, it will be ok ... but not advisable, for the application to arrive after the 16th.
You can try to include AFFIDAVITS (letters that have been notarized under penalty-of-perjury) Just being a member of the congregation isn't much ... having seen her attend services on specific dates ... is.
PROFESSOR OF IMMIGRATION LAW for over 10 years -- email@example.com -- www.capriotti.com -- This blog posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Also, keep in mind that this is an INTERNET BLOG. You should not rely on anything you read here to make decisions which impact on your life. Meet with an attorney, via Skype, or in person, to obtain competent personal and professional guidance.
You should hire an experienced immigration lawyer to assist you with this application, and for continuous residence requirement, it would be best to include affidavits, as well as letter from church.
Follow Gintare Grigaite, Esq. on Facebook (search for Gintare Grigaite, Esq.). Contact immigration lawyer Gintare Grigaite, Esq. of Grigaite & Abdelsayed, LLC at 201-471-7989, located in New York and New Jersey, for a consultation about your immigration case. Answers on AVVO do not constitute legal advice and do not form attorney-client relationship. Always consult an attorney for a legal advice.
NYC EXPERIENCED IMMIGRATION ATTORNEYS www.myattorneyusa.com; email: firstname.lastname@example.org; Phone: (866) 456-8654; Fax: 212-964-0440; Cell: 212-202-0325. The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.