If she committed zinaa when she was not Muslim and had a child, then she became Muslim, what should she tell other people and the child himself?

 

WHAT TO DO IF YOU HAD A CHILD BY AN
"ARAB" THEN A DEW YEARS LATER YOU BECOME MUSLIM AND WANT TO GET MARRIED WHAT DO
YOU DO? WHAT DO YOU TELL THE CHILD ABOUT HER REAL FATHER? WHAT DO YOU TELL THE PEOPLE? OR
DOES IT MATTER

Praise be to Allaah and peace and blessings be upon the
Messenger of Allaah.

Zinaa (fornication or adultery) is a crime that is forbidden by divine
laws and rejected by all wise and sane people, even if they are not Muslim. Allaah has
condemned those who do this in many aayaat of the Qur’aan and in numerous ahaadeeth
of His Prophet
(peace and blessings of Allaah be upon him). He has threatened those who
do this with severe punishment and disgrace in this world and the next – except those
who repent, have faith and do righteous deeds, for Allaah will accept their repentance.
The gate of repentance is open, but it is a condition of repentance that one should regret
the deed and give it up. Islam wipes out whatever came before.

With regard to the child, he belongs to his mother, and should not be
named after his father. This is the ruling concerning the illegitimate child: he should
not be named after his father because he was conceived in fornication, not in wedlock. It
is obligatory to take care of this child and bring him up with Islamic manners and morals.
Because this immoral act has occurred, you must repent from it, but you should cover it up
and not disclose it; you do not have to tell the people the truth. If the child wants to
know the truth, you can tell him in an appropriate manner, and let him know that what
happened was in the days of kufr (before you became Muslim), and that when a person
repents and becomes Muslim, this wipes out whatever happened before. The child does not
bear any responsibility for what happened, and as long as his mother has become Muslim,
there is no grounds for rebuking or punishing her. It is obligatory to accept the will and
decree of Allaah, and if this child does righteous deeds he will enter Paradise. No soul
is made to bear the burdens of another. We ask Allaah to keep you safe and sound and to
forgive you. May Allaah bless our Prophet Muhammad.

Following note from Muslim Quran online Blog 

The first lesson to be learned by all Muslims is the importance of the Reading Quran Online. All Muslim should learn holy Quran online  is the Book of Allah All mighty. Every word which the quran reciter recites or he read quran is the word of Allah it is mentioned in Quran in Arabic that it is the guidance which has come from Allah. That is why we as Muslim say it is the Holy Book. We should  learn quran and focus on quran teaching thought by the quran tutor to the students and the tutor should arrange the kids quran lessons in such an easy manner so they can understand it easily and make there quran recitation online as beautiful as he could and teach them that the words of Koran were sent by Allah to our beloved Prophet Muhammad (SAWW) through the angel Jibraeel. And further more elaborate wile reading quran with teaching them the quran tafseer and the tajweed quran with its rules let then do quran memorization in the proper manner We as Muslim should respect the teachings of Quran and in every other manner when we are reading it or when we listen to Quran wake up Muslims and spread the word of Islam to

End of the note by quran education