mom hates me?

my mom thinks i am using my PTSD from getting raped as an excuse to be late for/ miss school. she herself is a therapist. i don't really know anyone at my school or in my town, so i don't have much support. i've really been trying to recover and to myself it looks like i've made huge strides (rebuilt my confidemce by getting into hair and makeup, started working out again, started eating enough, i can even talk to people about what happened now) but when i wake up in the morning, especially after a night of crying, it's just hard to get going. my grades are fine, though a little out of shape because of my recent transfer. but my mom is mad that i have a hard time getting to school before the bell rings. first of all, my first period teacher doesn't even care if i'm late, he's really laid back, and so i take advantage of that when i'm feeling crazy and having a hard time getting up. but my mom has convinced herself that i'm trying to use my PTSD and sadness as a guilt trip. this is really just a vent i guess. when i need her to be sympathetic she just tries to make me feel bad about myself. maybe i'm not excelling in the areas she wants me to, but i'm really trying to take a journey of self improvement and she keeps stepping on it.