agate
Agate - how my muse calms down
That depends on the situation.
There are plenty of situations where Steffi would insist she doesn't need to calm down - she considers anger and frustration to be perfectly valid, and in some cases would even argue that calming down prematurely would be bending to someone else's will. In those times, she'll only calm down once whatever emotion she was feeling has run its course, and/or she feels that whoever the emotion was directed at has learned their lesson.
If she's decided that her anger and/or frustration do need to be released in some other way, feeding or hooking up can help, though those aren't always convenient options - which is why she's a fan of punching bags.
If the emotion she needs to calm down from is something other than anger or frustration (i.e. sadness), she'll usually channel that emotion into anger and then go about calming down in the ways described above.