Musume no Kanojo is a simple story about a single mother who falls in love with her daughter's girlfriend. Even if the plot is a kind of strange, this story is really cute and introduce two characters who discover the "real love" for the first time. The age difference between the both of them could make the story akward to read but it's not the case.
There are many H-scenes, maybe a bit too much, but they are short and pretty well-introduced.
But I think the key point of this manga is the art. All the characters are very cute and the bodies are well proportioned, a
point very important when a work contains sex scenes.
To conclude, Musume no Kanojo is a good yuri story if you want to read something short.