Hello,
I also have a talkative cat. But her normal noise to tell us: "Ok Iam here" or "Ok I am leaving" is complete different to this meows if she want something (food, door open or something else).
Does it sound as she hurts somethin or she is in really stress? Then I would let the doktor...
Hello,
welcome here! Yes, cats can be so different in their charakter! People without own cats will never believe it, but its real. There are complex personalities (some cats more than some human people ).
Hello and welcome here!
I also think you are on the right place... . Here are so many people who are crazy about their cats so you will feel home here very quickly .
Have fun!