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.
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.