Poultry Cell is fine to give, for a couple of days.
IF this is "new" then she probably broke it.
If the toe does not easily straighten for splinting, then personally I would leave it alone.
Vitamins will not correct a broken toe nor will they correct crooked toes.
There is a...
How old is this bird?
Looks like at some point the toe was broken. If it's not bothering her, I would leave it alone. Check the toe and the bottom of her foot periodically for any indications of sores/bumblefoot.
B12 is Cobalamin. B2 Riboflavin is given to help chicks that may have...