Lupin visiting Sirius at Azkaban

[sad1199]

No: HPFGUIDX 111581

sad1199 here:
  If one of my very best freinds supposedly betrayed one of my other 
very best friends and the other best friend ended up dying... I 
think I would find that former best friend and confront them. I 
would beg and cry and yell and plead to find out what had happened.
Now, it says in the books that Fudge visited Sirius in Azkaban and 
Crouch and his wife visited their son and did the big switcheroo. 
WHY DIDN'T LUPIN GO ASK SIRIUS WHAT HAPPENED? Yes, I am yelling. 
This is truly irritating me. In my fifth reread of PoA and have so 
many more questions now than before. I just can't belive that Lupin 
didn't go to Azkaban and confront Sirius.
  Also, how does the extreme personality change in Fudge get 
explained. In PoA he is SOOO concerned for Harry's safety; he blows 
off his underage wizarding and offers him refuge at the Leaky 
Cauldren, BUT! In OotP he is a complete horses behind to Harry. I 
know adults hate to admit they are wrong but the turn around is so 
totally 360, I can't buy that it's because Fudge does not want to 
admit he was wrong about the return of Voldemort.
  And! Crookshanks is part Kneazle and part what? Why is the cat so 
protective and friendly to Sirius? I'm thinking Crookshanks is 
someone that Sirius knows well. Anyone?

Happy, Caring, Loving...   sad1199