If Willow is genuinely having issues with textures at her age it would be worth checking in with a PHN.
On the other hand I worked with a girl once who puréed everything for her daughter, I’ll never forget it, the girl still had massive food aversions at age 6, it was a huge problem, she could only eat puréed fruit and veg etc and refused so much food, would only stick to a specific list. That wasn’t sensory issues in that case however, the issue was cultivated by the mother from the get go. The mother had an eating disorder herself though so there was issues around food and control. It was really distressing.