I was just on a jury panel for a similar case against an insurance company of the person at fault. I have seen so many armored cars lately pulling into oncoming traffic and nearly causing accidents. It makes me wonder what is going on with that business that they have people driving these huge trucks in this manner. I'm not kidding. In the last 3 weeks I have seen it 4 times!
Yes, you can get pain and suffering. It usually does not seem like much. What you need to make sure is that any claim that is made against the insurance company will cover not only hard costs (medical), but missed wages, if your mom was planning on traveling, the cost of changing those plans, or even the time she may spend helping others out (like watching your kids for you) that does cause some monetary strain on her and her family.
These items are hard to calculate, but if you can put a dollar amount to it, then most likely you will get what you are asking for up front. Good luck and I hope you have a better holiday season.