This is a debatable character development note.
First off, Deus Ex Machina can exist in life and can be used in a subjective way, but I find it to destroy my suspension of disbelief in stories. However, it can have a fallibleness that we can “relate” to.
Puella Magi Madoka most recent episode (number 7) used this device to develop a character. Her name is Sayaka.
Warning; the following content will or may contain spoilers on the Puella Magi series
I will try my best to lightly spoil.
Sayaka Miki (left) and Hitomi Shizuki (right)
Above. We have Sayaka Miki (left) and Hitomi Shizuki (right). Sayaka plays a stronger role than Hitomi. She has been developed as a “nice, simple, and shy” character. However, the scene I am describing above is a “button pusher”.
Hitomi Shizuki is a device. She is a character made to push Sayaka to become a cliche. That cliche is a Yangire.
And for some reason, I feel extremely irritated.
Here is my reasoning:
1. Sayaka character development was smooth.
2. Hitomi was not developed; She is a sudden character developer for Sayaka.
3. This made Sayaka character development rough and uncomfortable. She became a Yangire.
However this could be all smoothen out if looked into. It was foreshadowed that Sayaka would become a Yangire, but the development felt sudden despite all the warnings.
Unfortunately, I forgot that this series would be sad. I had hope that it would lighten up a bit, but it seems like it is only going to get darker. I may be dropping the series because of this, but I will hang on for a bit longer since it’s a short series.
Anyhow, the development of Sayaka as a Yangire would have been very smooth if the development lasted longer. The series is rumored to only go for 12 episode. We are on 7. Things may be getting rush.
All in all, the rush development for Sayaka is still fallible. I am sure people can relate to the situation that had occur to her. However, I don’t ever want to be reminded of that suddenness.
What would I do to make things better?
Lighten things up!
Where is my little glimmer of hope 
?