I don't know of any novel title or storyline that has anything to do with " the modern female protagonist was reborn as a child and was very smart, had a heart attack, and had an older brother." If I can provide more information, I will try my best to provide you with useful suggestions and clues.
This book is an ancient romance novel. The female protagonist is reborn, and her family is destitute. She has a blind mother-in-law, a dull husband, and a strange aunt. She could only pick up her profession as an embroiderer and use the embroidery rules to lead her family to a well-off life. I hope you like this fairy's recommendation. Muah ~😗
I recommend the book, Peace of Rebirth, to you. After the female protagonist Li Ping 'an was reborn, she brought the guilt and regret of her previous life. She returned to the past and was given a magic treasure when she was reborn. The golden lock that had followed her since she was young was actually an amulet that could tell good from evil and protect her from disasters. It was just that leveling up was a little troublesome. Also, how did she meet the person she had been thinking about in her previous life in advance in this life? However, the female protagonist seems to have a heart attack. You need to read the details ~ I hope you like this fairy's recommendation.😗
I recommend the novel,"Reborn in the Pastoral Life" to you. When the female protagonist was reborn as a child, she had a calm personality. She did not ask for wealth, but only wanted to live freely and lead her family to create wealth and achieve a leisurely rural life. I hope you like this fairy's recommendation. Muah ~😗
The female protagonist returned to her childhood 15 years ago because of a rebirth. When her family was facing a broken situation, she tried her best to change her fate. This book fits the description of the problem. It is also an ancient romance novel. I believe you will like it. I hope you will like this fairy's recommendation.😗
My lovely reader, according to the information you provided, I recommend a novel for you-"Young Master Gu, Don't spoil Your Wife Too Much: Don't Move!" The female lead of this book was surnamed Gu and had an elder brother in name, Gu Moheng. The sweet love between the male and female leads would make people unable to stop. I hope you like my recommendation.😘
There were two novels where the female protagonist was called Pearl. They were " Pearl of Rebirth, Happy Daily Life " and " Jade Pearl." The female lead of " The Pearl of Rebirth's Happy Daily Life " had a brother called a soldier and a cold girl. And the female lead of " Jade Pearl " had an older brother and a younger brother.
" She, who only wanted to revive her senior brother, was reborn." After the female protagonist Li Yan was reborn, she only wanted to resurrect her senior brother and search for the mystery with him. Senior Brother is a high-ranking official and has an emotional entanglement with the female protagonist.
The female protagonist, Yang Yue, had transmigrated into Ouyang Baozhen. She was the daughter of the general's family and had many brothers. The male lead was Ouyang Changfeng, who was also the female lead's brother, but the female lead was not with him in the end. It might not completely meet the requirements of the plot in the question, but I think that the similarity of this novel is relatively high, and the plot is very interesting. I hope you like this fairy's recommendation. Muah ~😗
I recommend "The Irascible Poisonous Doctor Is Not to Be Trifled With" to you. The female protagonist of this ancient romance and classical fictional novel also likes her brother as much as the novel you mentioned, but her brother is not her biological brother. The main story was about the female protagonist's extraordinary life because she transmigrated to an ancient time. She abused scumbags, fought with the best, earned money, went to the capital, helped her brother earn money for his exams, and the siblings worked together to make the family rich. At the same time, the female protagonist was grateful to her brother and treated him well wholeheartedly. I hope you like this fairy's recommendation. Muah ~😗
I recommend the book "My All-rounded Medical Concubine is Super Fierce" to you. In the book, the female protagonist is reborn, the male protagonist transmigrated, and the female protagonist has special agent skills. She's neither bad nor cruel, and she slowly falls in love! According to the description, the female lead would recall that she had two older brothers and one older sister. Moreover, the novel was a fantasy romance novel. I hope you like my recommendation. Muah ~