Everything costs money. Send money in the mail? A stamp. Bank fees, check cashing fees, etc. etc. The PayPal fee is pretty nominal when it comes to raising money you would not be able to readily obtain otherwise.
If you wish to make this a subject away from a certain person, sure. But to peg this on Carla's terrible accident and injury is shameful, tactless, and straight up rude.
Quit being a dick.