We made real progress today.
It was Cleo's 4th feeding attempt and it was so smooth - I am over the moon. We have taken small steps towards a decent feeding and today we seemed to nail it.
Here she is downing that mouse - not her prettiest look but good to see nonetheless (I know I should leave her alone after she takes the mouse but I was so happy I had to take a quick photo).
And here is her husbandry record showing her progression from refusal through to taking the prey well (I have my own abbreviations - VR: very reluctant, NE: needed encouragement, TW: took well)