By - hakunamatatamatafuka
Give em the ol razzle-dazzle
Have you thought about getting her one of those fountain water bowls for cats or putting it somewhere else instead of making her drink out of a little bowl on the floor? She might not feel secure or comfortable which might cause the odd drinking position.
This is the only possible reason I can think of too. I read online that they don't like to have their food and water close together also. Ill have to try something different, it's just so odd lol. I have and have had other cats and I've never seen something like it.
2 of my 3 do similar pose when drinking