I saw this on another site before it made its way to Dynasty, and I was having the same problem. It appears to be more of a stylistic choice that makes it really... difficult... to understand. Very strange choice, from my perspective, to substitute thought bubbles for speech bubbles on the MC.
It's not just that though. There's an incoherent feel to the dialogue. All of the characters seem to use an odd syntax and respond oddly to each other
I suspect those that know/understand the mc, are able to read her thoughts because she is so shy so they know her well enought(?)