Has anyone mentioned that she was suspected to have bruising on her lower body, but that it was hard to tell due to decomposition? If that is the case, that could indicate abuse, for example if the bruises were on her thighs or lower tummy. It also means that the delay has really jeopardised the accuracy of the post-mortem. Although I really don't get paedophile vibes from SH.
I'm a girl and was not an early developer but had full adult feelings from age 9. So children, especially girls who develop quicker, can and do have full adult "crushes", for want of a better word! They just don't have the maturity to deal with the subtle and complex emotions that come with adult activities and thoughts, which is one of the reasons why children need protecting so much. However, I imagine that Tia would have been outraged and humiliated at the suggestion she may have fancied her ugly old drunken "step-granddad", who was three times her age.