Feeling Burnt Out but no call backs on resume (sorry long)

So I've been a med/surg nurse for almost a year now. I have been feeling somewhat burnt out for months. I have had a few health problems and my daughter has been sick a few times recently. I had my grandmother pass away and was greeted with disgruntled staffing when I called in bereavement. I've been to the ER a few times for my daughter and all I hear back is "do you know how short we are and what you're doing to us by calling in". When I do work we run short staffed almost every night, increasing the chance for errors, which we all have been making more of. I get 5-6 patients but they are all very high acuity people. The only time I feel my manager talks to me is when she has something to complain to me about. I dislike working 4 8's a week and when requesting a schedule that works for me and my family I was told I was being inflexible. I'm just generally unhappy. I have an appointment with EAP to help with the stress. I have been applying other places and continue to check in but no call backs. I call my own HR and express my wish to transfer units and never hear back from anyone. I love the people I work with, the night shift all learns to bond together since we are busier than most people think (surgical patients go crazy at night). I just don't know how much more of this stress I can handle. I already feel guilty from having to call in, especially when I often call to see if they need help on my days off. I just feel close to having a breakdown soon, but am also complete afraid of losing my job (my boyfriend was laid off a few months ago so I am the soul supporter of him, me, and my two year old). Any suggestions? Sorry for the length but I just needed to vent to nurses who would understand!