"Visar" makes me think of "vision" which refers to seeing which is what one does when shown something... not a perfect comparison but maybe it helps a bit!
Good one :D I have a really hard time remembering visar. I will try your method haha.
You are smart. I do the same. It is a mnemonic process of memorization that occurs by association of new knowledge with pre-known ideas or objects.
Most people will pronounce the combination r + s as a 'sh' sound, even over word borders. But it's not compulsory.
Does the same apply regardless of the order of R and S? As in "r+s"='sh' and "s+r"='sh'
sin basically means "her own". If you use hennes here, you're essentially saying that she's showing some other female's dress.