...but probably not in the way you're thinking.

This does not have to do with scratching the base of her tail. This has to do with the fact that she has no clue how to potty downward! She's now five - we've been dealing with this for the duration - I've heard various pieces of advice along the way, but she's a 'special case'. When she goes potty, as she does so, her rear end raises up and the spray goes straight outward. We are actually about to have a special enclosure made to encase three sides of her litter area. We have reached the end of options.

Where the heck did this behaviour come from??!!