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 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.😗
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.😗
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.😘
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 ~
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 ~😗
😋According to your request, I recommend two novels to you: "The Rebirth Goddess's Counterattack" and "Young Master Ji's Secret Wife." In the former, the female protagonist became a strong woman after her rebirth, possessing space and the ability to cultivate, and walked on the road to rise. In the latter, the female protagonist became pregnant after her rebirth, married the male protagonist, and started a sweet husband and wife life. The female protagonists of both books had strong backgrounds, were smart and beautiful, and were both favorite novels. I hope you like this fairy's recommendation. Muah ~😗
I recommend the ancient romance novel "The Daughter of the Reborn Uncle's Mansion" to you. The female protagonist, Gu Nineteen, was a concubine's daughter in her previous life, but after transmigrating and being reborn, she became a legitimate daughter. Her husband was her cousin who grew up together with her. Her parents had arranged for her to marry him before she was born. The plot of this novel was full of twists and turns. The female protagonist had experienced many difficulties but still bravely moved forward. I hope you like this fairy's recommendation. Muah ~😗
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 ~😗