Help Lexi get her cancerous tumour removed

Lexi is 7 years old and has a malignant mammary Tumor. The surgery is £400 and without it she’s going to have to be put to sleep. Unfortunately I don’t have that amount all in one go so I’m trying to raise as much as I can so I can save her life. With surgery she will go on to lead a normal happy life. Please help me help my fur baby. Thank you