Please help Pebbles get life saving surgery

My name is Shondelle and my 6 year old mini lop rabbit fell severely unwell over the weekend. She has completely lost her ability to walk/hop and has no balance. It was initially suspected to be E.Cuniculi, however after 3 vets visits - the latest one being a specialist - it has come to light she has a growth inside her ear which the first vets completely missed. She will need to have a CT scan which will cost around £1200 and life saving surgery to have it removed which will cost around £3000. All pets deserve a chance at life and I want to give her one too, she is everything to me. Any help at all towards her treatment would be so truly appreciated, thank you so much ❤️