Immigration Site

Hi,
I am working with my congressional office to see if U.S. immigration will reopen an old sponsorspip case.
Some details. A daughter was sponsored by her mother in 1990. The I-130 was approved but the lawyer did not complete the instructional packet so the case was terminated. So the family was not aware this had happened until this year.
The congressionial office has been able to locate the original I-130 (mircle).
They are going to send the request to the California processing center along with a letter and additional submissions from family members.
Anyone with any experience in having motions to reopen under humanitarian grounds (i know this is an oxymoron)?