I think I can help here.
The premise:
You're in Salesforce1 which has a VF page, and on that VF Page you have an iframe. That iframe wants to redirect to a VF page and see the mobile version, but it doesn't have access to the sforce.one API.
If that is the case you can built the URL as such when doing the redirection
/apex/mypage?isdtp=p1
It is a URL hack and there are no guarantees it'll continue working release to release, so just keep an eye on it.
If that is not what you were looking for let me know and we can figure out the proper solution.