Yes you can!! Contact her tax person with your request and they will give you the necessary info. My mom just died a few weeks ago and I was the one who handled Social Security for her caregivers (I was one of the caregivers and I gave my info alongside the others). Feel free to contact me if you have further questions.
Assandache, that's my point as well. Unless deductions were made, I don't see how any credits could accumulate for that work. Or perhaps the OP paid into the SS system herself.