@Lady Penelope said:
…I personally find that Mediation suits ‘bossy’ and ‘assertive’ people whereas it does not suit ‘quieter’ and ‘less confident’ people. Some people are better ‘talkers’ and some people are better ‘writers’…
If the mediator is any good they should help to even things out by ensuring the quieter person get a turn to speak without pressure and allowing them to gather their thoughts.
For those who would be “better ‘writers'”, it would be reasonable, I think, to come to mediation with some written prepared notes to speak to and to have copies for the other party to refer to as they hopefully respond reasonably to your various points.