Помогите с переводом на англ. Очень нужно. Пожалуйста. Тут чуть чуть.

I'm so sorry now. I was a silly one and I have already paid for everything.
It will never happen again. Please, forgive me. I'm begging you not to turn me down, сause I'm completely honest with (to) you.
Respectfully....(или Truly Yours - более неофициально)

I'm so sorry. I was silly girl and I've paid already for everything. It did not happen since then and never will. Please forgive me and don't turn me down. I'm honest to you till the end.
With all my respect,
(name)

А это письмо личное или формальное, в какую-нибудь организацию?
От этого зависит перевод.

Личное:

I am so sorry. I was a stupid girl and I have paid for my mistake in full. This was a one-time unfortunate event which will never be repeated. Please forgive me and don't reject me. Indeed I am honest with you and I have nothing to hide. Respectfully yours

Формальное:

Let me extend my deepest apologies for what has happened. I have made a regretful mistake. This was a one-time occurrence which will never be repeated. Please be considerable and don't reject me. Respectfully yours

I'm sorry. I was silly young girl and i have already paid . It have never repeated and it will not repeat in the future. I ask you to excuse me because I was honest with you all this time. Yours

I am really sorry. I was a silly girl and i have paid for it already. It hasn't happened since and it never will. Please forgive me and don't turn me down. I am completely honest with you. With respect...

В нете полно онлайн переводчиков текстов.

ТАК! А Вы почему без трусов?)))

I'm very sorry. I was a stupid girl and I already paid for everything. This will no longer occur and never happen again. Please forgive me and not deny me. Because I am honest with you until the end.
With respect.

I'm sorry. I was a silly girl and I already paid for everything. It will no longer occur, and never again. Please forgive me and not deny me. I'm honest with you till the end.
Yours.