What do you think about this excerpt from my "unfinished" book?

I am 20 years old (newly) I decided to write a book and I wanted to know what you think about my unofficial excerpt. I think I have a good start, but I'm not totally sure. Any feedback is welcome!

Sophia Collins gazed sullenly at her hands as they lazily moved the wash cloth over the dirty plate in her 14 inch deep stainless steel sink. Her mind was scrambled as numerous thoughts flooded her mind. Why am I stuck in a dead end job? Why do my children hate me? how did I lose my husband to Marsha Gray? Why am I forty with no life? Why do I date men who are jerks? Why did I give my oldest daughter up for adoption? Why did my father leave us? Why do I have to work hard at working hard? Why am I so tired and boring? Where is my social life?

Not one of those fleeting thoughts had an answer attached to them. she continued to scrub and scrub away at the now spotless plate in the sudsy water. she scrubbed away all the resentment she felt at herself for being a self-proclaimed failure and at her family for being extremely dysfunctional. every thought that entered her mind she replaced with the soothing sound of humming. a tune that her grandmother hummed to her as a night time sedative sprang to her mind. Her humming increased its pitch as the thoughts bubbled to the surface of her mind again.

A knock on the back door wrenched her from her "happy place". Sighing, she peeked through the white lace on the window of the door. Her teenage daughter, Stefania Glinwell stood on the step with a mixture of defiance and impatience evident on her face. Sophia shook her head in anger, and pulled opened the door hard enough to make it smash against the wall.

"what did I tell you about using the back door? The front door works just as well! At least you actually have a key that opens that door!"

Stefania smiled, her eyes twinkled with mischief, "It's more fun this way, Mom. if I use the front then I won't see the hatred on your face when you see me standing out back."

"I don't hate you Stefania. I just don't understand you. you are like an entirely different breed of teenager. I don't get the way you dress...what is that style again? Ghastly?"

"It's Goth, Mom. Goth. G-O-T-H. It's not a STYLE, but a way of life.

"Yeah well you look like you could be a vampire in Twilight. or true Blood. Which is why I am surprised that you dislike that show and movie."

"I don't like them because of the comparisons. People are ignorant and mainly stereotypical idiots. They think that we are imitating vampires or something, because of the way we dress and act. but we're just making a statement."

Sophia gazes at her daughters makeup covered face and dark clothes. "when did it become "we"? I thought you were an "individual"?

Stefania snorts in disgust, rolls her eyes and replies "I am an individual. I am an individual who is part of a group." she turns and walks away.

Sophia sighs and returns to the dishes. all interest lost the minute her daughter walked into the kitchen. she gazes at the clock above the table in the far right corner. near the pile of debris that collected from where the wall was removed. Renovations always seemed like they needed to be done. Even when she was done. she sorted through the mail on the counter top.

In your first paragraph, you use too many adverbs (sullenly, lazily) and describing the depth of the sink adds nothing to the story. also, while the questions Sophia asks herself serve as exposition, there's too much of it simply spelled out for the reader. try showing us some of these bits of information instead of telling us. For example, you could leave out the bit concerning her husband leaving her, and introduce the fact by showing Sophia throw out mail addressed to him when sorting it in the last paragraph. that not only hints he's no longer a member of the household, it shows his separation from the family wasn't planned or pretty.

Stefania's first line of dialog doesn't sound like something a teenager would say. Think about how
teenage girls talk. Finding and listening to several may give you some insight and help you write more convincing dialog. also, watch your tenses. you need to be consistent.

Review the use of hyphens. when you write something like 'makeup covered face' you need to hyphenate 'makeup-covered,' to show that the words are both describing her face.

Review the use of apostrophes in showing possession.

The second sentence in your last paragraph is a fragment, as is the fourth, and sixth. Sentence fragments are acceptable, even appropriate in dialog, but never otherwise.

Send that off to be published sweetheart cause that is AMAZING. let me know ASAP when it's out because I would definitely buy it.

EDIT---Wow! People thumb me down because I have an opinion. I liked it. That's what's called a "personal" opinion. I don't have to agree with everyone else that it sucks because I don't think it does.

i think its great. dont let anyone tell you other wise and if you send it to the publisher, they
could pick up any grammar, etc.

What do you think about this excerpt from my "unfinished" book?