I don't think so. "really" would be like "she doesn't trust him at all", "surely" and "na pewno"... are more like opinions. Opinions that she (almost) certainly doesn't trust him, but still, opinions.
Hey Jellei. I have a question about wierzyć and ufać. Are they both intransitive? To say "I believe you", you is dative. And to say "I trust you", you is dative.
Is there anything more I should know about these two verbs? Also, please correct me if I'm wrong. Dzięki.
Yes, they're both intransitive, yes, they both take Dative, I don't know if there is anything else you need to know :)