How to Safeguard the Islam of Newly Reverted Sister
Question

                I would like to thank the founders and the workers on this web site because it helped me and is still helping me a lot.

I embraced Islam three years ago (Al-hamdulillah), and from that time on I worked to convince my family members and my close friends to submit to it.

My little sister (15 years old) who was watching me for the past three years grew in her belief and eventually uttered the Shahada (testimony of faith) one week ago ( Al-hamdulillah).

Now my concern is, how can I protect her faith; how can I help her to strengthen it?

I feel she might lose her faith any time because the environment we are living in encourages people to go astray. In addition to that, my parents still don’t know about her conversion, I’m sure that if they knew they would not be pleased with it and they would try to get her back to Judaism.

Please, I need your advice, I really don’t know how to deal with this situation.
Praise be to Allah.
    First:

    From that which makes a Muslim happy is his seeing people enter into the 
    true religion of Allah, the Exalted and leaving their false and distorted 
    religions. We’d like to congratulate you on having been chosen by Allah for 
    Islam and then for being granted the ability to call towards the guidance 
    which resulted in the Islam of your sister and her being saved from the 
    wrath and punishment of Allah. This takes our minds back to the glorious 
    companion, Abdullah ibn Salam, who was a Jew and who entered Islam and 
    perfected his Islam. We ask Allah, the Exalted, to keep you and your sister 
    firm and to grant you the strength and ability to attain beneficial 
    knowledge and work righteous deeds.

    Second:

    From that which we advise you to do with your sister who entered Islam in 
    order to help keep her firmly upon the religions is the following:

    1.Encourage 
    her to recite and to listen to Quran a great deal. It would be nice if you 
    could assist in selecting recitations of recitors whose voices are pleasing 
    to the listeners. 

    2.Make 
    available to her small but highly beneficial Islamic books which contain 
    simplified Islamic rulings and the biographies of great Islamic scholars and 
    leaders. It would be preferred if they contained biographies of female 
    scholars, callers and warriors.

    3.Make every 
    effort to keep her away from bad company, especially those friends which she 
    had before Islam and who had an impact on her due to their strong 
    personalities or gentleness. Be gentle while doing this so as not to turn 
    her away from you and have her more attached to her friends.

    4.Make 
    easily accessible to her touching audio materials which talk about Islamic 
    issues and the fate of man after death and the hereafter.

    5.Encourage 
    her to regularly praise and thank Allah, the Exalted, for the blessing of 
    guidance. Through gratitude, blessings last and every slave requires of his 
    Lord, the Exalted, to assist him, strengthen him and keep him firm upon his 
    religion.

    6.Encourage 
    her to pray regularly and on time while giving the prayer its due by 
    carrying out its necessary and compulsory actions in the best manner and 
    urge her to supplicate abundantly during the prostration.

    7.Be sure to 
    tell her not to reveal her reversion to Islam to her family at this time out 
    of fear that they will influence her negatively and cause her harm in her 
    religion. See the answers to the two questions
    33827 and
    69752.

    8.The fact 
    that you were able to influence her and she accepted Islam after observing 
    you shows that she respects you and has love for you. Therefore, try to be 
    her best friend and the rock she can lean on. Try your best to give her all 
    the moral support you can; continue being a good example for her, let her 
    talk to you and share her thoughts with you and let her feel that you are 
    there for her whenever she needs you. Insha Allah your companionship and 
    support will be a positive influence on her.

    9.It goes 
    without saying that perhaps one of the most effective means (if not the most 
    effective) is for you to regularly and consistently supplicate to Allah 
    (du’aa) for her. Everything is in Allah’s Hands and He is the One Who 
    controls the hearts, therefore, implore Him to keep your sister firm upon 
    the truth.

    10.Gently try 
    to help your sister find a new set of friends who will be supportive and act 
    as good role models.

    We ask Allah to keep you both firm upon His religion and to grant you 
    success in pleasing Him. Thank you for taking the time to benefit from our 
    site. 

    May Allah grant you beneficial knowledge and the ability to act according to it.