Has bad relationship with her sister
17-9-2005 | IslamWeb
Question:
The relationship between me and my older sister has lately become filled with hatred. I don't want it to get any worse. Whenever we start talking she starts getting into a fight with me. So, now I refuse to talk to her at all. Can you please tell me any Du'aa, anything at all that can help this get better? Insha Allaah everything will be alright again.
Answer:
All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.
First of all, we ask Allaah to reward you for being keen on keeping the relationship between you and your sister as good as possible without any disputes and disagreements. This is indeed how the Muslims should be and especially among relatives.
Firstly, we advise you to find out the reasons that led to this dispute and solve every problem accordingly. However, we do not know any special supplication for this, but you may say any general supplications like the saying of the Prophet 
: "Ya hayyu ya qayyoom, birahmatika astagheeth, aslih lee sha'nee kullahu, wala takilnee ila nafsee tarfata ayyn." ''O Ever Living, O Self-Subsisting and Supporter of all, by Your mercy I seek assistance, rectify for me all of my affairs and do not make me rely on myself, even for the blink of an eye." [An-Nasaa'ee]
We also advise you to seek the help of some pious and righteous relatives in order to reconcile between you and her. Your sister should be reminded with some texts about the excellence of reconciliation, among which is the saying of the Prophet : "Shall I not inform you of something more excellent in degree than fasting, prayer and spending in charity?" The people replied: 'Yes, O, Prophet of Allaah!' He said: "Reconciling between people.'' ''And spoiling the relations between people is the shaver (destruction)."
So if reconciliation takes place, all perfect praise be to Allaah, otherwise you would have done your duty. Nonetheless, you should treat her kindly in order to fulfil the obligation of keeping ties with kinship.
Furthermore, it is not permissible to cut relations with her and avoid talking to her more than three days. If you greet her when you meet her by saying "As-Salaamu Alaykum" and speak to her in a way that would attract each one of you to the other, then you would have indeed avoided the forbidden severing of ties with kinship.
Allaah Knows best.