Hard knocks

So I have this woman at the facility now that is just difficult. She is consistently on the call light and a royal pain most of the time. When I first met her, I tried to give her the benefit if the doubt and was very accomodating, but now it is starting to wear on me. There are days when i feel like she believes that her call light is a morephine pump. She will ask about pain meds and when they are due on a consistent basis. I understand people are in pain and it is subjective, but it get so hard to believe sometimes. It is hard to be an objective nurse sometimes and it takes patience and a little hard bagaining. I hope that don't fizzle and become one of those bitter nurses who see everyone as a "drug seeker", because I am sure that there is some validity to their claims of pain. I need to find the line that is going to work for me.