So instead of holding her at the dish I put the dish in the box. Rexie snuffled and licked around the base of the dish, worked her way up to the top, then down the inside until her nose hit the food. A few seconds later she was ankle deep in the food and slurping away. I covered the box with a towel and left her to it.
Feeding times are going to be so much less prickley now.