Answer:
(Your Address)
22th August 2020
Dear (Sister's name)
Hi! How are you? Hope you are alright. I know your exams are going to start and it is your finals. I didn't want you to know about this news like this way but it is important. (Sister's name) , you were aware about mother's health. Recently, her condition had gotten worse.
Yesterday, mother fainted. I called father in the office, and then we took her to the hospital. I've heard the doctor telling father that she need to be hospitalized. She is been suffering by cardiac arrhythmias. Cardiac arrhythmia refers to a group of conditions that cause the heart to beat irregular, too slowly, or too quickly. There are several categories of arrhythmia, including: bradycardia, or a slow heartbeat. tachycardia, or a fast heartbeat. irregular heartbeat, also known as a flutter or fibrillation.
We have got everything under control. I have decided to take a few days' off from school. (Sister's name) ,please don't take any descision in hurry. You give your properly then if you want to come then come back. We are taking care of mother.
I promise to keep updating you about mother's health condition. I hope you do well in finals. Best of luckfor the exams!!!
with love from
(Your Name)