My Lost Sister

I am struggling with the catch 22 legal process to discover if Christine is truly my sister; I don't have access to her adoption records because I can not prove she is my sister legally but biologically she almost assuredly is, but I greatly need affirmation. Sadly, Christine had unexpectedly passed away. Learning of her death has sparked a quest in me to discover if we are truly brother and sister. To affirm that Christine is my sister will answer deep life long questions of mine concerning our siblingship and our family history. Just as important, I will then be able to appropriately grieve her death. This takes financial support, so I ask for your help. I need money to hire a private investigator to uncover the truth concerning Christine. Please support my endeavor to discover and affirm our siblingship as brother and sister. Your help would be deeply appreciated. Please feel free to ask questions regarding this endeavor.  Thank you very much.