She's getting along better now thank you keberoxu. There have been no more wasps in her bedroom - she reckons she's managed to 'swat the lot' out of the window. She was worried that her feisty little cat Mela might try to catch one and get stung in her mouth. This can cause the throat to swell and the cat would die.
My neighbour and I were sitting on The Bench when she noticed a large grey thing making its way across our lawn. It was an elephant-hawk moth caterpillar! Blooming enormous (about as long as a pencil and as thick as a finger) They're nice things, and the moths are beautiful. I gently picked it up and popped it onto a bush to pupate. If not, a blackbird might have fancied it for his tea!