It's telling that she also accepts regular feminine pronouns. It's like she's admitting that she can't get away with it.
Or that even if she would prefer the pronouns that she thought of herself she accepts regular ones as well and is not likely to freak out and start ranting if people use the wrong pronoun.
We already have several pronouns in english language and I try not to use the wrong one to address someone. I can even use Zie and such if that is what they want to be used (or just avoid pronouns completely so that I won't use the wrong one accidentally) but some of those special snowflake pronouns are annoying.
...Also, that post might have been written jokingly. Or maybe she thought that when she offers things like "purr/purrself" people will at least use she rather than he.