Monica is getting convinced that she is going to die, while trying to keep as calm as possible to not freak out anyone that might be watching
Monica is becoming more and more convinced that she’s going to die, while trying to keep as calm as possible so as to not freak anyone who might be watching out.
Edited* * *
...is getting convinced" - means that somebody is convincing her, doesn't it?
...is becoming more and more convinced" - means that there is some mental process going on in her mind, right? This version seems to suit the second part of the sentence syntactically, whereas the first one doesn't.
Very good, Maya!
I am proud and happy to receive confirmation of my knowledge from you!
Absolutely! That was very intuitive of you 💪