I do not feel guilty of this

My manager today had given me a chefs coat. After I accepted it I had thought about it and don't want it. I have several coats already and don't want any more clothing for a while for work or in general.

My mother happen to see it. And then later asked me if I liked it. I told her I didn't want it now and that I want to return it. She kept telling me think about it, you need to think about how nice he was being. Yes, and I do not need it and she doesn't need to get into my own business as much as she does.

Another reason why I don't feel guilty about this is the fact I'm the smallest person at my job that wears chefs coats and I am sure the coat he gave me they have had for a while and it's a size small. They wanted to get rid of it.