I hate this feeling of guilty

Okay, last night my mother came into my room just to scold me.
As what I wrote on the very first post, I love to talk back.
And that was what I did yesterday.
I talked back.

And this morning, I woke up early and so did her.
She saw me walking out of my room but guess what?
Yes, she ignored me.
Man, this is what I hate the most.
I don't know when will she start talking to me again.
This is way too annoying.
I hate being ignored especially by my mother.
Everyone would feel the same, right?
Well, maybe some are happy when their mothers don't seem care about them but not me.
It makes me feel guilty.
This isn't the first time but I think this is the most serious one ever happened.
Normally, I would just let her be because I know eventually she would talk to me again.
But today, I need her help.
I'm going out with my friends to do some school project but of course I need some money for that.
The problem is I have no money. The only way is to ask for it from my mother.
What? I don't work, okay? I'm still 17 years old! It is still compulsory for me to go to school! Well, in my case, it is college.
I can do part time, but when the heck am I going to have the time?
I go to college at 6 in the morning and go home at 2 pm. And sometimes I have to stay at college until 4:30 doing some group discussion!
Homework is given almost everyday!
And every week there's always project, either group presentation or individual.
See, when do I have the time?
That is why I don't go to work.

Okay, back to main point. Now, how am I going to talk to my mother?
This is bad...