Doing something wrong that she don't like?

Alright,

My mom has changed alot since her and her boyfriend broke up. I don't mean good changes,
I mean bad ones. We'll call her boyfriend Ty and his son, Loser [they ARE NOT their real names!].

Me and Loser never gotten along but we called eachother brother and sister, and made it seem like we were getting along, so our parents would be happy.
Her and Ty broke up about 2 weeks ago, they shared a 2 year relationship on July 13th. I was happy for them in all but she was too wrapped around,
Ty's and Loser's pinky fingers. She did anything for them, yet she can't even take me out to eat and pay for her own damn food!
She's so different. She's moped around after her and Ty broke up but I mean yeah I'd be down about it if I loved my boyfriend that much and then he just ended it cuz he couldn't keep pushing himself to be there.
My mom's gotta let the fact get to her, not everyones going to be there forever even when they promise that they will.
She's too caught in the fact that Ty said he'd always be there for her; but always has some ending somehow,
weather we like it or not.

But she complains how she never has enough money to pay the bills ontime. She's working full time, going to school full time and going to get a second job.
From the looks of her house, that I'm sitting in, she has everything on the walls of what she brought and everything; if she's so caught up in money,
then why'd she keep buying this stuff?

Me and loser gotten into a fight a while back because he was talking bad about my brothers. Of how they stupid, annoying and they do things little kids shouldn't think of doing [drugs, smoking, drinking].
Yet he can sit there talk about my brothers like that when he does pot, drugs, smokes and drinks and sneaks out of the house at 2 in the morning?
Little brothers are gonna get annoying and their not stupid they jsut dont have the brians because they haven't learned what older people have learned.
But to cool off I just went back to the house [we were outside walking] and my mom was crappin' about what was wrong now. When I told her she said I had to get over it.
HE TALKED ABOUT HER OWN KIDS FOR CRINES OUT LOUD!! HER OWN KIDS!
She talks if Loser is her only kid. Later that night I heard her talking to a friend about what happened earlier and she said something simular almost exact to this " I would've taken his side but Summers my daughter and I have to take her side".
She said it like I was a bad thing that happened to her.

And oh get this, this jsut cracks me up. She says that I'm always on the computer and I swear ALL the time?
I'm 'always' on the computer because the satellite here sucks, and all my friends here are IN school,
and shes at WORK! I get off when she comes home and when she wants to get on the computer. I could just be mean about it and just stay on but then she'd yell at me for that too.
And the times that I've sworn was when I burnt myself or accidently cut myself. Yet I'll be sitting in the living room watching what is on T.V and she's in my brothers room playing PS2 or whatever,
And I can hear her SCREAMING the swear words because it didn't go 'her way' or she's swearing of how slow the computer is.

I'm beginning to not love or see her as a mom but as a friend.

She's making me real sorry that I even came down here to stay with her down here for a while.

But I mean what am I doing wrong for her to get so fusterated at me?

EDIT- Not to mention she has fleas in her house and she says she doesn't. My blood likes to attract things like these and I'm barely outside anymore and I get bit so bad! They bite hard enough to a point where I just bleed. I went to Texas for 4 days; 2 down there and 2 back [in a semi] and they just started healing up on the 4th day its that bad!

You aren't doing anything wrong, she seems really weak and dependant on other people, and is so selfish she won't accept that she should take your side. If you're staying with her for a WHILE, I suggest you move back the hell out as soon as you can. She's not the right kind of person to be a mother in charge, and you don't need that pointless drama in your life. It's her love life, not yours too, and she doesn't have to put you through the stress also that she is going through. Adults have to learn to get over things so that it doesn't permanently effect their kids, and she obviously isn't making that effort. I say go back to whoever you were originally living with and only make short visits with her, because she isn't right to be telling you what to do or telling you off for mere mistakes because she's so caught up in her own episode of East Enders.

I've put up with this for abont a month. This coming Monday my grandma -n- my two uncles are coming down to get me to go back to WI. When I leave I would've been staying with my mom for a month and a day. I can now personally say I wish I could hear my grandma complain of how she hurts then put up with this crap my mom puts me through.

My grandma is coming tomorrow so my pain is FREE, well starting to get free!