I feel like I could have been a better auntie today

Sometimes I watch my niece in the evenings or on weekends so her parents can have time. She’s 8 months. Today I just feel so bad because we went to a store that’s 45 minutes away. I feel bad that she was in the car for so much time when she could have been playing. And then when we got home she picked her own tomato and mashed it up for her to eat and some egg and she started choking. I put her over my leg and was smacking her back and it didn’t work so I had to shove my finger down her throat and then she stopped choking. My other sister was there and FaceTiming with my mom and she was saying “well you didn’t have to hit her back like that” I feel so bad that I was hitting her back so hard but the food wasn’t coming out and I didn’t even have time to think 😭 my girl had a rough day. Now we’re cuddling on the couch but I just want to cry. And now my family is being so mean to me that she choked. She wasn’t breathing and was turning red