K.S.
Hi C., I wanted to recommend the book, My Child Won't Eat, by Carlos Gonzalez. It has some great info about the reasons why babies aren't interested in food and how to solve the problem. You can read a review of the book here: http://www.llli.org/NB/NBMarApr06p76.html
Just remember to keep offering both food and formula as often as she seems hungry. Continue to offer her solid food at each meal, even if she refuses, have it available. Now that she is 9 months, you may try offering her tiny bites of soft finger foods. She may be more willing to eat if she is able to feed herself rather than having something forced into her face. good choices can be bits of banana or other very soft fruit or avacado. Best wishes to you!