The woman's motivations seemed very thin.

The bald guy wants someone dead. Cobb wants money. Young man is looking for purpose in life. I understand. But why would The Woman put herself in constant danger to conduce a plot that's not her own? Since it turns out she wasn't blackmailed, the original premise is basically gone.

She knows she has a powerful enemy. She's sees she's living with a man who is a murderer. She lets a strange man rob her house, get in her business and she sleeps with him while in a relationship with the other guy. She knows something deeper is going on but doesn't once think that it could negatively affect her.

I think this level of compliance goes beyond the "love makes you do strange things" plot.