For the first YEAR (12 months) of life, the vast majority of your daughter's nutrition should be from breastmilk or formula. I assume you're formula feeding, and it is *good* to rely on your bottle of formula! She's young, she needs it, and you'll have many many months of not needing the bottle when she is over 12 months of age. Breastmilk/formula is the most complete nutrition for her for the next 5 months, with solids to be looked at as more of "a fun thing to sample, to be social at the dinner table with mom and dad."
Though many people do it, 4 months old is *young* to be starting solids. Now at 7 months, she is giving you *very* clear signals of NOT wanting solid food right now, and I gently suggest that you honor what she's trying to tell you! She probably has a really good reason for not wanting solids right now (maybe her tummy is still sensitive after the illness). While you can ask your pediatrician, they are often not the most reliable sources for nutrition information since nutrition is not their specialty nor was it a major part of their training.
Links to some current information on starting solids is below, and it's very different from the cultural habits (like starting rice cereal at 6 weeks, which is very outdated!) that still linger thanks to our grandmothers and mothers. Sooo many people are still in the outdated mindset that solids are ok as early as 6 weeks, that after 6 months babies should be eating solids, etc -- this is simply not true. Medical research and evidence shows that there are many problems that result from starting *any* solids before 6 months, and that eating too many solids too early can result in poorer nutrition due to missing out on important breastmilk or formula.
Here is some more current information, with links to research, if you're interested in reading more:
http://www.askdrsears.com/html/3/T032000.asp
http://www.kellymom.com/nutrition/solids/solids-when.html
http://www.askdrsears.com/html/3/T030500.asp