No, you are not a meanie. Life is too short to be obligated to others and the things they want you to do it for them. An example of this is, I make hand cream and a "friend" asked me to make a whole batch of hand cream for someone she knew. She told me she collected the money already. It takes about a morning to make a batch. Two things, first of all, it was not enough money since prices have gone up and I buy my ingredients on-line so there is S&H. After her asking several times, I sent her the recipe and where I bought my supplies. I have not heard about hand cream lately from her.
Also, my New Year's resolution is learn to say no. I have two obligations that I promised last year, so that has to be done, but it is also a labor of love and I volunteered to do it.
I am 69 years of age and there are so many things I want to do for myself and my family to be obligated to do things for other people that they could do for themselves if they wanted it bad enough. Plus I still work at home for 2 different counties and my time is very limited to sewing.
Just hang in there. What you paid for your machine has nothing to do with her, nor is it any of her business. Just saying ............
Ellie