The stock photo of female detective, the inspiration was sherlock holmes.
When a detective catches a sniff of a man's life essence that she shall look at all the clues to look for the man. Once she has found the man she begins to study him to know everything about him. Where he likes to eat, what he likes to eat, what his choice mate's hair color, favorite eye color, breast size and walk of her gait that he likes. She then mimics all these as traits to the best of her ability even using magic to look like his ideal woman. Then she begins to infilitrate into his life to slowly gain his interest.
She will help him solve little mysteries of him losing his things. Which peaks her interest and lust for him desiring to help her soon to be lover finding things for him that he lost. As soon as that happens she begins to leave little presents and pay for his meals. And after he begins to show friendship, she then begins to flirt. After flirting she tries to sleep with him. If he ever tries to turn down her offers then she will steal his trinkets and person articles.
Forcing him to come to her for help. She helps him 'find' his items. And asks him for dates and sex as payment for finding his lost items. After they become husband and wife, then he will never lose things again. And if someone ever tries to hurt her husband emotionally or physically, she will use her deductioning skill to find out who did so. And when she finds them, she makes the pay dearly for hurting her husband.