Pro tip: using a toilet in a skirt is actually quite easy whether sitting or standing as long as its got a reasonable amount of looseness.
Just flip it and call it a day.
Skirts with a tight hem that don't flare out at all are more difficult, and at a certain point of tightness you will need to shimmy a bit to get in or out, and may need to unclasp it
Cocoa's outfit would be pretty straightforward. Just kinda lift and gather.