Redirect standard salesforce view of child object to skuid page of parent

Hmm, I spoke too soon. I was finally allowed to save the VF page… but when I implemented it as the view action this is what I get:

SObject row was retrieved via SOQL without querying the requested field: Related_Person__c.Patient_Name__c

Should I go back the the javascript method?

Or is there a way to tell apex to query that field?