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Maybe try giving her graduates food... Like puffs or stuff like that. They dissolve, so she won't actually choke on it... but she can practice on more solid things. You might also try making her some chunky applesauce, or softer fruits that CAN be swallowed whole, but are big enough to encourage chewing.
That said... My DD is 11 months old, and has been on solid table foods for the last 3 months. She chews very well. She has had a few 'choking' incidents, but she took care of them on her own. I only intervene if she can't gag it up on her first or second try. (Pediatrician told me it is important to allow them to try to clear the obstruction on her own, but NOT to let her actually get to the scary choking point...)