Thank you everyone.
She has been dropped off and is going to be spayed today. They said to call them at 2. I'm so nervous

She isnt as much of a fighter as Gypsey and I'm worried the stress will make her wallow in self pity and not eat. But I am going to go to Pets at Home before the vets and get some of her favourite herbs and some nice hay to make her tempted to keep munching.
Is it okay to use a hot water bottle with cover for them under the fleece? If not I will buy a special animal heat pad...
I'm just shocked at the price of a spay £81, when Gypsey cost about that with blood tests etc (£50 spay roughly)