Injury Dead or Dying toe?

My guinea pig name is Trouble. A few weeks ago I noticed that trouble seemed to have a broken toe. So I bandaged it up with pet tape. I didn?t bring her to the vet because she didn?t seem to be in any pain. I looked at her toes today and it seems that she had broken 2 and not just one. I feel like one of the toes is dead, I?m not sure, and I want to know because if it is I would like to bring her to the vet immediately to prevent further damage, and prevent the guinea pig from getting deathly ill. So is there anyway if I can tell if the toe is dead. The toe in question is very hard, is bigger then her normal toe but it the same size as the other broken one. Trouble has black skin, and part of the toe is white and that leads me to believe it is dying along with that the skin doesn?t feel normal it feels really hard and I just want to make sure she is okay, Do y?all have any advice on how I can tell, or make her comfortable in the mean time while I wait to get a appointment for the vet? (both outside toes were broken the middle never broke)