Don't feel bad about it now! Feel bad about it before you do it, and then don't do it!
Your mother is insane. She is crazy. She's a crazy person. She'll never be happy.
Madness string 105798
There aren't a ton of great autism orgs out there. The one I know of that isn't awful is the Autistic Self Advocacy Network (ASAN), and they have recently had some concerns come to light involving internal racism and bad management. I can tell you to put a country mile between you and Autism Speaks (anything branded with puzzle pieces typically ties back to them). They are the PETA of autism advocacy.