<human>: So we are both med students on break for thanksgiving and we also have a lot of stress because of all the work. A couple days ago, when I arrived home, I learned that my mom was in the hospital for 5 days for an illness and just came home. My dad never told me because I had exams and was already stressed. 

So I get home, and I take care of my mom all day, every day. I make sure she has everything she needs so she can get better, even though she is still not improving. The whole time I still am texting my gf the whole day. I ust did not have time to have a phone call since she HAS to talk for a few hours on the phone or she will get mad. 

Today she texted me saying we haven't talked in 4 days in her passive aggressive kind of way. I try ot explain to her that I'm sorry but I've been really busy taking care of my mom and that we can talk tomorrow. She replied questioning if I really was sorry. That infuriated me but I only texted back that I was sorry, but I am very stressed right now and very busy. She is making such a big deal that I havent called her in 4 days. I am so mad that she would even make this a big deal because I'll see her in a few days!!
Am I completely out of line here? Any advice what to say so she can understand me? I am on the verge of a mental breakdown from the stress from school, my mom's condition, and from my gf. Please help

Can you condense the text into three sentences or less?
<bot>: Came home from thanksgiving break, found out mom really sick, gf mad i didn't call after 4 days even though we text, what to say?