Should I accept this gift?

This past Christmas I went to Illinois (from Ohio) to visit family. My grandma just had a brain tumor removed. Well due to all the hospitalization, my Aunt and her husband were "plotting to get the will". I saw thru it all the whole time I was back. Every time I went to visit my grandma my aunt was there sucking up and just talking a lot of crap about my mom to her. My grandma we think has mental problems. Like schitzophrenia or something cuz she is paranoid, mean, and just weird. She thinks there is a woman living under her deck. Well on xmas sh*t hit the fan so to speak when my mom called my aunt out on her lies. Even with proof right in front of her my grandma continued to swear us as the enemy and believed my aunt's every word. My aunt was so angry that I told my mom what she had said about her that she attacked me and her husband, my own uncle who I've known my whole life, physically threw my mom and myself out of my own grandma's house! On Christmas! And my grandma held the door open for him! I've been dealing with depression and sadness from this ordeal for a long time now. Now all of a sudden my mom is back in with my grandma and she just sent my kids birthday cards. I don't know if it is right to accept these cards (she usually sends/sent a lot of money) or send them back considering the cirstances but my mom keeps telling me to just accept them that she is ill, that it wasn't her it was my Aunt that caused the problems. I just keep picturing her opening the door with a look of utter hate on her face watching the man she used to hate physically throw her own granddaughter and daughter out of her house on CHRISTMAS. My husband tells me to send them back to her; he thinks she is evil. I don't know, it may not seem like a big deal yea its just a card but its the principle of the matter. I am angry about the situation don't know what to do. What would you do?