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I'm so sorry Lola is exhibiting these symptoms.
Diabetes is one of the possible medical conditions that can cause weakness in the hind legs, due to diabetic neuropathy, and it can also decrease appetite. Another possibility is feline cardiomyopathy, which is a heart condition where a side effect is a blood clot that is formed in the main artery carrying blood to the hind region and causes weakness, paralysis, and/or pain in the hind legs. Check the color of her hind paw pads and if they are normally pink, see if they are bluish or purplish and colder than her front paw pads; this would indicate that no blood is reaching the area. Here is more information on both conditions:
There are many other underlying medical conditions that may cause these symptoms, so I hope you're able to have Lola seen by a vet or an ER vet, as soon as possible so she can be examined in person and treated after a diagnosis is made.
I hope all will be well with Lola!
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