I can relate to you right now. I am butting heads with my sponsor over ammends right now too. I also do not have that many, but do have several people that have hurt me very much and are in general just bad people that I do not want to make ammends to. The reality of the situation is that this is only about my side of the street and not theirs and if I am honest with myself there are ammends to be made.
However, I do not want to make these ammends and at this point in my life I will not do them. My sponsor has encouraged me to pray for the willingness and reminded me that not all ammends will be done at once. I will know when it is time to do them.
Well... I am still praying. (Maybe God doesn't want me to be willing!) LOL
I am sorry to say this, but it doesn't sound like a sponsor issue to me. I expect that any sponsor would feel the same. But if you think you need someone that you feel more comfortable relating with, then you should look into a new sponsor.
Best of luck.