ABOUT LIFE, ABOUT ART (&the rest)

It's very late. Tomorrow's school, but I want to write a few sentences about something what just happened. I sit here in my bed, checking some timetables for tomorrow. And then my stepfather comes along, thinking I'm asleep (he went into the bathroom, my room's the door next to it, so I could hear him even the door was closed). And as he leaves the bathroom he says "This bitch!" in an angry tone. I often hear him saying things like this when he goes to the bathroom, but I never really care. When I tell him, he always says he doesn't remember. Mostly those insults happen at night, you have to know. And it's always connected with the fact that I forget something in the bathroom. But today I took everything with me, I'm really sure.
So I shouted directly after the incident "What did u say?"
He answered "Good night"
So I repeated
"What did u say?"
He said
"Good night?"
My mother was asking from downstairs
"What's happening, what did u say?"
He answered
"Nothing bad."
I said
"Hm"
waited
added
"He said bitch to me"
But my mom was already gone and as he heard it, he closed the door.I found that somehow strange and dishonest.
And I felt a bit bad. Like guilt. But somehow different because I'm not guilty and I know that. And I know he likes me even he's sometimes a bit rude. If my parents would hear what I sometimes say when they leave the room, they would be also a bit hurt I think...