The first one is really awesome:
FARGO by Bavitz. It's a puella magi madoka magicka fanfiction set after the movie Rebellion. A magical girl, ousted from her city by her friend, is wasting away in Fargo, ND - when Kyubey gives her an offer she can't refuse.
https://www.youtube.com/playlist?list=PL-vT9uPaqMClS1g-QzAwJzaK7wlXNBrS1
The second is
The Shadow Keeper, a continuation of
The Fall of Night, both by derpyland. Trixie is trying to adjust to her new life, and failing. Everyone says they've really changed, but have they?
https://www.youtube.com/playlist?list=PL-vT9uPaqMCmHc_C4nfg6X7QUkDQhufxU