She may have loved him for what he could provide her but when he could no longer provide her with that she scorned him, abused him, and neglected their child.
Looking at the relationship from the other direction, young man Rumpel had learned to expect horrible treatment from the people who claimed to love him. He would’ve interpreted it as affection if Milah had paid any sort of attention to him, good or bad.
Killian thought Milah was pretty nifty, too, but he wasn’t exactly a well-balanced individual at that point in his life. Maybe Milah treated everyone poorly, and the only men willing to give her a chance were those with no self-esteem.
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