Jenny is an immoral character and a liar....
I find her character immoral and dishonest.
She knows her "boyfriend" is nothing more than a conman but is more than willing to stay with him for the material perks afforded by ripping off old ladies.
Then at the end of the film she tells another male friend who invites her to Paris, that she has never been there before. Great way to start a relationship, they could be getting on fine and then he finds out she is a liar and had toured Paris with a former lover, so another person hurt in her wake.
Not a very nice person is our Jenny.