30 dollars and a card

So yesterday I gave my mom 30 dollars and a mothers day card and she is upset with me cuz all I gave her was 30 dollars now I think she is being ungrateful getting upset over 30 dollars and doesn't take in the fact the entire month she was in the hospital. So on April 11th my mom had intensive back surgery and I took her to the hospital and came home she got out of the hospital and went to a rehab for 3 weeks throughout the 3 weeks I was there every single day bringing her food washing her up bringing her things pushing her in the wheelchair she has three other kids my brother came for a week and only saw her one day and my sister claimed she didn't have money for a ticket so I offered to buy her a ticket and she sent me the money back saying she couldn't get time off she got my mother 50 dollars for mothers day and my two brothers didn't get her anything not even a phone call on the day that she came home I have been up with her until 7 am because she has been in pain then woke up at 9 am to get her medicine and make her food and come back and be ready for my class she got out of rehab facility and is home now I picked her up, took her home and stayed with her while she was in pain then took her to the hospital this has been going on for a month and a half I've been doing this all by myself with no help now yesterday I get my mom a card and send her 30 dollars for mothers day and she's upset with me that "I only think she's worth more than 30 dollars" and I'm like I've been by your side for a month and a half when nobody was there it was me and you're upset over 30 bucks idk am I crazy for thinking that?