Blood...and disinfectant?

[Danvrapp]

Game today where girls is shooting a free throw. Notice a dime-sized spot of what appears to be dried blood on the jersey. Tell the coach we need a jersey change with no penalty. No problem or argument from the coach...he immediately takes her out of the game.

Time goes by...she comes back in with the same jersey! Coach states the trainer sprayed it with disinfectant. Confirm this to be true with the trainer. Jersey appears damp around the blood spot as though it was sprayed and rubbed/ground in.

Is this OK? Should we have forced her to change jerseys?