To me things are not that bad as they seem to you and to your friend. Your post is full of contradictions which is confusing me a lot.
He is a nadaan dost and loves her but he does not care about her abuses her. 
She is kind and sincere has sharafat a, sabr and masoomyat. If she has all those qualities then why is she complaining about her husband to strangers and why does she not keep ghar key baat ghar main.
If he does not use bad language against her , if he does not beat her up , if he buys gifts for her, if he is taking care of her needs , where is the abuse in this behavior ? It all means that he is a good husband and should be cherished. It is not her business how he conducts himself with his friends and others , if he is talkative and arrogant how does it hurt her ?
May be she is living in the world of dreams and illusions and still looking for her khwaboon ka shezada and realized very late in life that this guy is not exactly what she was looking for. But at the end of the day none of us is perfect , so what , if is reality of life.
She should be thankful to Allah for a loving and caring husband.
To me seem like she has many nadaan dost who are filling her head with all the negativity towards her husband and her happily married life.
Please think about what I said and tell her the same. I am yours and her well wisher that is why I am so blunt and I could not be diplomatic about it all.
My intentions is not to insult or hurt you . I do not know you , I do not know your friend , I do not know your friend’s husband either. I am telling you as I see it all.