There is no Slave end, there is Rape End, Bad End (pregnant), Lewd End, Tool End, and Love End.
And for the Lewd End you should use at least 4 aphrodisiacs, end every round with vaginal (any tipe, but you should cum every time only after her pleasure level reached max, so she becomes addicted). And also, if you choose the top answer after the first round and then choose the bottom after the second, she'll turn in the Absolute Alpha form and gonna kill your fucking ass (probably). But, if you can defeat her in that form, it would be the same end anyway.