How long has this been going on? I know my kids go on food strikes when they are teething. She may be getting some teeth in and it just plain hurts to chew! When my 16 month old is teething (which happens to be right now), we feed her crushed ice in between bites, which seems to help. I don't suggest doing that with an 11 month old, but frozen veggies might help. Just put a small handful of frozen peas or baby lima beans on her tray and see if she will start putting them in her mouth by herself. Frozen raspberries or blueberries are good too. If teething is an issue the cold will help numb her gums and she won't mind chewing things. My kids sometimes prefer frozen over heated now! It is an easy snack. Add some small pieces of cheddar cheese (bite size) and some baby crackers and you have a meal!
My 16 month old sometimes won't eat unless she can feed herself. Kids this young get into control issues and food is usually the center of it. Give her some things she can put into her mouth herself. Some of it will land on the floor...kids love throwing things on the floor...but you might be surprised what ends up in her mouth if she has control over it!
Otherwise, don't fret over the pureed food. At that age, I used pureed food for main meals and the frozen veggies, fruit, baby crackers, cheerios, bites of cheese, etc. for snacks just to get my kids used to more solid items. Then I started chopping up whatever I made for dinner really fine and added yogurt, mayo, etc. to make things stick together and feel a bit more like puree in their mouth. Then I went for just chopped fine, then eventually cut in small pieces. Every kid is different and you have to see what works. Whatever you do, don't keep on the dinner theater, that will only wear you out and end up not working after a while...