The idiom 'throw herself into the arms of' means to romantically connect with someone despite other options available, seen as controversial by others.
Throw herself into the arms of in this context means to romantically connect with or get involved with someone. In the passage, it refers to the girl choosing to be with a man who is older despite having other options available to her. This action is seen as controversial or questionable by others.
The passage portrays the girl's decision to be with an older man instead of more suitable suitors. It implies a sense of disapproval or disbelief from those around her.
This idiom suggests making a significant choice in relationships that might be viewed as unconventional or socially frowned upon.
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