So James went out and bought a small dog wheelchair, which she modified to fit Bertha. Now, the feisty rabbit is zooming around just like before, rolling through the garden and happily grooming herself.
And the good news doesn't end there. Inspired by her significant improvement, Jones hopes that eventually Bertha might even outgrow her need for the wheelchair as her muscles appear to be strengthening.
"Hopefully, within the not-too-distant future, she will regain mobility herself," James said. "The vet and myself can't believe how well the chair's actually working."