Hello and thank you for using our service. My name isXXXXX and I am a licensed attorney and will try my best to help you. Believe me that I will try my best to give you a solution if one exists, but sometimes the law does not have a good one.
It is possible but there is nothing you can do about it until you hear from them. Worrying about it will do you no good. If you want to push your case along, you can do any of the following things:
1) Call the USCIS Customer Service number at 1-800-375-5283.
2) Go to http://infopass.uscis.gov/ and make an appointment to speak in person with an immigration officer to find out the status.
3) Because the case is very delayed, you may contact your U.S. Congressmen to get them involved and have their staff push the case along. Here is a helpful link to help you with this: http://www.usa.gov/Contact/Elected.shtml.
4) And finally, you could hire an attorney to find out the status and also push the case along. You can try to find one at http://www.ailalawyer.com/.
If it turns out that they will reopen your Residency case because of what happened with your mother, then you should hire an attorney to explore options. But for now, you will need to try to do one of those 4 things that I listed.
Please let me know if you have additional questions and please do not forget to rate my service to you (not the state of the law) as that is the only way that I can get credit for my assistance to you. Even after you rate the service, I can still answer additional questions for you without additional charge. If you do rate me positively, a bonus is always appreciated. If you would like to request me in the future, just go to http://www.justanswer.com/law/expert-guillermosenmartin/ and make sure you type: FOR GUILLERMO on the subject line. Thank you!