There is no way to seduce you own Chachi or whatever she is, you mad boy!! Are you crazy? Has she given you any reason to believe she want to have sex with you? Do you know what having sex with a family member means- ist very difficult and extremely complicated. Here read this and beware that your Uncle does not get wind of your “desires and fantasys” https://lovematters.in/en/making-love/should-i-try-sex-with-an-older-woman