Clever Ever Eva sounds like it could be a lovely book suitable for 5-8 year olds. When our daughter came home from the school library with it we looked forward to bedtime and sitting quietly reading it to her. It all starts out so well with two brothers, one being rich and one being poor. The poor mans daughter has to go to work and goes to work for the rich uncle. At the end of the year instead of paying her he promises her she can have the new calf once it is grown. The following year having worked very hard she goes to her uncle to claim the cow. He denies all knowledge of ever promising her the cow. They go to court over it. Ok, in my opinion this is no longer sounding like a great story for a 5-8 year old. The last part of the book is all about death and shows pictures of the typical hooded skeletal figure death is usually depicted as.
The book is actually based on an old Czech folk tale and is quite good, but just not really suitable for children and definitely not suitable for bedtime reading.
A young teen might enjoy the book particularly given how the clever daughter wins out.