Skater’s Heel

My daughter is a higher level ice skater, learning double and triple jumps.
She has developed what looks like a stone bruise on the back of her heel.
It is painful and has turned a grayish color.
She has purchased a soft insole which seems to be helping but we need a longer term healing.
Is there any medication, foot soaking, etc. that will help to eliminate this condition?
Thank you, Joanie Gable