Am I wrong for feeling like this?

Last night my mom went to a teachers awards banquet, a lady that my mom raised (my mother worked for her mom for49 years). She sent a limo for her mother, and my mother, her brother and sister. My mom didn't want to go because she has trouble walking but I pushed her because she don't have much money and I wanted her to feel like cinderella. I went through so much getting her together, when I brought her with the others I said mom one day you will have to ride in a limo for me and she said for what your job isn't important. I am a cna, I pay all of my mom bills, I am a very good woman. When my husband was alive I took care of him for 5 year at home and he was paralyzed and on life support; I loved him so much. I am a very giving person and I can't believe my mom said that in front of all those people.