It's a good thing. Back when I was playing a lot (4ish times per week, rather than 1/week), years ago, my players started to guess about a lot of stuff, and it was almost all correct. They had many NPC in-game plots figured out, etc. At first, I thought "am I too predictable?" But, after a couple weeks, it occurred to me: they're just invested enough in the NPCs and campaign that they
know how these NPCs think. I finally came to this conclusion when I noticed they only guessed what people were up to when they had had interactions with them / knew about them, or had heard of it. They could not, in general, predict events that they were not a part of. I wasn't predictable on the whole, but they had gotten to know the setting / NPCs well enough to predict how they acted to a fair degree. It just meant my setting / NPCs were fleshed out and consistent.
If they're guessing correctly, they're most likely invested. Could it be the GM being predictable? Sure, it could be. But, in my case, it was a level of investment, rather than me being predictable. So, overall, I'd take it as a good sign. Nice RPing for the rakshasa (a creature I quite like!); keep it up. As always, play what you like
