She doesn't know what love is. Being insane and showing that you can die for your love is just not done. If it were true love, wouldn't your dying affect the other person too? Wouldn't you respect the other person's thoughts and feelings? And would you ever think of stealing someone away? If your love is true, you would own it up to the world not cower down, scared at every moment that your cover is going to be blown. She thinks love is getting expensive gifts and going out and having fun. Otherwise she wouldn't feel so burdened to look after the household which is anyway a responsibility once you get married.