Whilst it is technically feasible to include links from the children to their parent using bookmarks and hyperlinks, a quick study of the scant OOo API documentation doesn't give me the confidence to attempt it particularly after the difficulties I had writing the existing report. It may easier with MS Word automation interface but I have not looked into that as I would not want to change one and not the other.
In hindsight it would have been better a generate a report directly as text in Rich Text Format rather than via OOo and MsWord APIs but that is 'water under the bridge' now.
Including the Ancestor Report written by Jean-Claude Guasp, sadly no longer with us, is also not straightforward as it is written in VBScript and would require translation to javascript first and then be changed to generate MSWord/OOo/RTF instead of HTML.