In the Name of Allah, the Merciful, the Most Merciful
who, in adversity say: 'We belong to Allah and to Him we shall return.(156)
On those will be prayers and mercy from their Lord, those are guided.(157)
This is stated in the Qur'an: (Sura 2: AL-BAQARA - Juz' 2)
God bless you
I ask for peace for your sister