The Hitchhikers by Diane Wakoski

Well, I have a feelings I will need a lot of help with this poem. It seems as though she is afraid of Hitchhikers because they make her feel like she has no choice, if she does not pick them up, she would feel guilty for not helping. BUt if she does it could cause possible danger to her. I think there is a deeper meaning here but Im not grasping it too well at this point. Definitely could use help.