How do I get step-daughter to forgive me?

I hate to admit any of this but I was a TERRIBLE person last month and I think I may have warded off my stepdaughter for good! I found naked pictures of her on MY ipod touch 4G! She had taken them to send to her boyfriend or something, I dont know. To get her back I posted them on the internet on a few different websites for naked girls and linked it on her facebook wall and I REGREAT IT SO MUCH! She has been falling apart ever since and my husband HATES me! I was just sick of a GROWN WOMAN mooching off us to the point that she's taking nude pics of herself on my phone! No 29 year old should be doing that!