Tom and his mother

Situation: Just before breakfast.

Mary (Tom's mother):
What happened in the bathroom this morning? 今天早晨(or早上)在浴室里发生了什么

事情？
Tom:
Nothing really. 没(什么)事。
Mary:
You were making a noise. 你们刚吵吵嚷嚷的。
Why? 怎么了？
Tom:
Ann put shaving cream on my toothbrush. 安吧把剃须膏挤在了我的牙刷上。
Mary:
On your toothbrush? 讵剃须膏？什么？！
Tom:
Yes, it was horrible. 恩，那糟糕透了。(or 甭提了，真是恶心死我了。)
Mary:
Well, Ann paid you back. 啊！但是，安也报仇了(or 你们俩也扯平了)
You woke her early. 你提前叫醒了她。
Tom:
Yes, an hour early. 嗳。嗯，提前了一个小时。
I won’t wake Ann early again. 我一定再也不会那么早叫醒她了。

Tom and his mother

Situation: Just before breakfast.

Mary (Tom's mother):
What happened in the bathroom this morning? 今天早晨在浴室里发生了什么事情？
Tom:
Nothing really. 没事。
Mary:
You were making a noise. 你们刚吵吵嚷嚷的。
Why? 怎么了？
Tom:
Ann put shaving cream on my toothbrush. 安吧剃须膏挤在了我的牙刷上。
Mary:
On your toothbrush? 放在你牙刷上了？
Tom:
Yes, it was horrible. 恩。那糟糕透了。
Mary:
Well, Ann paid you back. 啊！安报仇了
You woke her early. 你提前叫醒了她。
Tom:
Yes, an hour early. 嗳。提前了一个小时。
I won’t wake Ann early again. 我一定再也不会那么早叫醒她了。 u chinese is very good

Tom and his mother

Situation: Just before breakfast.

Mary (Tom's mother):
What happened in the bathroom this morning? 今天早晨在浴室里发生了什么事情？（you don't need 情 in oral language.） 
Tom:
Nothing really. 没事。
Mary:
You were making a noise. 你们刚(It could be better if you use 刚刚 or 刚才 instead of 刚)吵吵嚷嚷的。
Why? 怎么了？
Tom:
Ann put shaving cream on my toothbrush. 安吧把剃须膏挤在了我的牙刷上。
Mary:
On your toothbrush? 讵剃须膏？  挤在你的牙刷上了？
Tom:
Yes, it was horrible. 恩。那简直糟糕透了。 （If Mary says this sentence, you could use 那. Because when you use 那，it sounds something happened to others.）
Mary:
Well, Ann paid you back. 不过，就算是安报仇了 （啊! is the response when something just happens accidentally, and you feel surprise or been scared, doesn't sounds like well）
You woke her early. 你提前叫醒了她。
Tom:
Yes, an hour early. 嗳嗯。提前了一个小时。 (we seldom use 嗳)

I won’t wake Ann early again. 我一定再也不会那么早叫醒她了。（一定 and 再也 means the same thing so you should just use one of them, and I think 再也 is better here.）

Your translation is great!! It seems that I've changed a lot, but your original one is already very fluent and sounds like native speaker! You did a great job!!

Tom and his mother

Situation: Just before breakfast.

Mary (Tom's mother):
What happened in the bathroom this morning? 今天早晨在浴室里发生了什么事情？
Tom:
Nothing really. 没事。
Mary:
You were making a noise. 你们刚吵吵嚷嚷的。
Why? 怎么了？
Tom:
Ann put shaving cream on my toothbrush. 安吧把剃须膏挤在了我的牙刷上。
Mary:
On your toothbrush? 讵剃须膏？ 在你牙刷上？
Tom:
Yes, it was horrible. 恩。那糟糕透了。
Mary:
Well, Ann paid you back. 啊！安报仇了
You woke her early. 你提前叫醒了她。
Tom:
Yes, an hour early. 嗳　唉！。提前了一个小时。
I won’t wake Ann early again. 我一定再也不会那么早叫醒她了。