Is my boss being manipulative??? help please!!!?

I notice that whenever I happen to have an emergency, which is not often I seem like a victim to the same song and dance. An example, there was one time I was literally throwing up and not feeling good, and I had work in 4 hours. I called early in the morning stating I wasn't feeling well and that I had to lay down, she said well stay on the line because I have to give you some phone numbers for people to cover your shift. Call and text all of them and if you find someone to cover your shift notify me. To me this seemed extremely messed up and considering I have a clear track record of barely EVER calling out only when I'm on my death bed or an emergency. Another instance was my mom could only meet up with this doctor to perform a root c on my tooth. I told my boss that this could be a last minute ordeal ahead of time because my mom needed to find a second opinion. I am in a considerable amount of pain. I called her and told her that my dentist could only see me today and that it was an emergency. I was going into for work 3, and I called around 9:30 to 10am. She said stay on the line im giving you numbers. I explained to her it was an hour and half away and it was necessary I get on the road now. She told me this was my responsibility to get my shift covered first and foremost, and to call people. It got to the point where I called my mom crying and she said are you on the road yet tash!? and I said no because my boss wanted me to go home and call people to cover my shift and to wait an hour until they replied. my mom called her and explained that last minute ordeals happen and that you have to learn to manage. She told her it was part of the companys policy. Is she manipulative or being reasonable?