I think cockers are fantastic dogs and now would not have any other breed
however I don't think they are easy dogs for a novice
having come from a family that always had dogs mainly collie crosses I thought I was prepared for a puppy. We also spent a long time reading books about cockers, but nothing prepared me for Ben
the amount of biting, the temper tantrums, guarding behaviour etc really made me question having a pup. I also was not prepared for the amount of grooming a cocker needed, even though 'books' tell you they need a lot of coat care, it was harder than I expected to keep on top of his very long puppy coat. And finally the obsession with food, rolling in horrible smelly things, and eating whatever he could find when we were out was a complete shock
What would have made a difference is if I had known about COL because I would have understood that most of these are normal cocker traits and not me being a failing cocker owner. Also I had to deal with other people's misguided thoughts about 'cocker rage' which everyone said Ben had.
If your friend is serious about having a cocker I would suggest she reads the puppy board to get an idea of what to expect with a happy naughty cocker. Also if she knows about buying from a good breeder she shouldn't have to worry about health or behavioural issues.
Sorry for the long reply, but so often on the rescue boards there are adolescent cockers looking for new homes because people haven't realised just how much time and attention a cocker pup needs and it's heartbreaking. Obviously if she does go for a cocker she will be rewarded with a lifetime of love and fun