I accidentally cut her nail too much and she's bleeding is hydrogen peroxide good to put on it or what could be better to use?
Hydrogen peroxide will not stop the bleeding. It will kill any bacteria, but in doing so it will sting like a motherfucker - so this shouldn’t be your first choice.
If you do use an antibiotic ointment in the future, use regular strength Polysporin (NOT extra strength NOR the one with the pain reliever). You do NOT want to use Neosporin - it is toxic for hedgehogs.
There are commercial styptic powders out there that you can buy at the pet store (usually marketed towards dogs or birds). A very common brand is Kwik Stop®. Simply tap the powder onto the wound and it will shorten the clotting time.
If you don’t want to buy some, you can also reach into the pantry and grab some cornstarch. It does an equally great job.















