I decided she was sending me a pretty painful direct message. She needed more. So the cereal came out a few days later. Her doctor had already given me the go-ahead nearly a month ago, so I knew exactly how he wanted me to handle things.
Sadly, she wasn't really a fan. She opened her mouth up at first, but then after a few bites she pushed the food out of her mouth with her tongue and was very actively evading the spoon. So I'm still nursing on demand, even if the demand seems insane, and every couple days I'm strapping her in to the high chair and hoping she shows some interest.