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I'm new to this SEO business - and I focus on inbound marketing. My client's site is www.SubconsciousMind.com. Just a few weeks ago it was showing in the top search results for several major keywords. Now, it has disappeared all together and there are competitors showing that have very little SEO (metatarsi not set up properly, etc.). So, I know there has to be an opportunity. Some obvious things: 
There aren't a lot of links and the majority seem to be bad (bad linking farms)
Social media is set up by a robot
Articles are poorly written obviously ONLY for SEO My client hired a SEO company awhile back to get results, not understanding black hat / white hat and it worked for several years. Now - it is really hurting her. The sites she is linking to doesn't have any contact info to get the "unlinked." I've read I can use the disavow tool. I asked her if she got anything from Google about "being slapped". She doesn't even receive the emails to her site because she trusted someone else to set it all up. Should I rebuild from scratch? Any recommendations? We are funning adwords now as a quick fix.