They do not better care for them. In many parts of the world, deformed or mutilated children are just tools for strangers, who traded them in, to improve begging results.
When you donate to these gangs, you are supporting child trafficking and worser things. https://www.youtube.com/watch?v=zEnN_Bqu14s
If you want to help, donate to certified organizations with a proofen track record of helping the poor.