Hello....
I had gone through your question and will try my best to resolve it...
Intrauterine fetal death can occur due to so many causes and you can easily google it out, so not going in details about that...
I want to tell you that its not always that if you had intrauterine death, so in future you will also have such kind of problems...but you need to be precautious for sure...
folic acid tablets are given to prevent any kind of neural tube defects in baby, which is one of the cause of intrauterine death...and it should be started before 3 months of planning
pregnancy...
I am not sure why
ecosprin has been prescribed by doctor, so its better that your friend can ask directly to her doctor...
I also suggest your friend to take few precautions in her next pregnancy like avoid sex, have sufficient rest, healthy diet, avoid travelling or heavy weight bearing, regular checkup of BP , Sugar, etc....
This much information will surely help your friend..