5 months ago a vein was hit while getting botox. The Hemosiderin Stain is still under the eye, will it resolve? (Photo)

Has Botox on crows feet amongst 5 months ago and a vein was hit, had a black eye for 2 weeks and a Hemosiderin Stain is still there under the eye. It’s been almost 5 mths with very little improvement. Will it resolve? injector said there’s nothing they can do