The Beast's trap

In Beaumont's "Beauty and the Beast" it mentioned there is a girl in the story who is so pretty and has a pure-mind (the story prefered her a name - Beauty), and she also is so much different from two of her sisters who always wanted to marry either the count or the duke. When people proposed to her she always excused them with the reason that she wants to stay with her father. So, it is very difficult to get her without some special "strategies", and because Beauty cares her father at the most, so Beast used her father as the "bait" to get her. The chance had came, one day her father was returned from the home port and heading back to his house at the country-side. On the way home he met a snowstorm and got lost in the forest, so Beast used bright-light as the signal to direct the father walk toward his castle, and in the castle Beast has already prepared  some food for him to eat and a nice bed for him to rest. Everything was on schedule, and on the second day when the father is ready to leave and he picked a pice rose from Beast's garden as for his youngest daugher's request. Beast went crazy and claimed the rose is his favorite thing in the world and the father should be punish for picking up that piece rose. The plan went very sucess, Beast offered the father a deal: using one of his daughter's life to change his own life; Beast knews his youngest daughter is the only one who would sacrify herself to save her father's life, and she is the only one that  Beast wants. The youngest daughter took the deal and came to the castle for exchange her father's life. So far, Beast's plan still went very smooth and sucessful, after Beauty arrived at the castle Beast treated her with all his heart, and eventually he "conqured" Beauty and married her. The whole process is Beast's trap; from the beginning the father's business fail to the father got lost in the forest and  until Beast marired Beauty were the parts of the process in Beast's plan.