....she already knew they had telepathy magic, but this time she can't sense any magic being done to herself!
The alternative is, what, universal translation magic that doesn't even need to know anything about the target language? That's absurd. Besides, she isn't getting translated Germanian, she's getting some weird kind of nonverbal meaning that she didn't know her brain could do! What the fuck!
If everyone (or even anyone) here can affect her mind without her even detecting the spell, she is absolutely defenseless. Tanya will be very, very friendly and nonthreatening towards these people.
Next order of business: the enormous blue lizard was apparently a 'dragon', which the spell kindly informs her is 1) a sapient person 2) enormously powerful compared to humans. ...well, presumably that's compared to non-mage unarmed humans, which, fair enough, but: a person?! She managed to kill someone important in her first five seconds on another world?!
"I killed.... him, in self-defense. He attacked me first. But if there was a bounty on his head" (who puts out individual bounties in this day and age?) "then I will claim it." That is how much gold? Is gold just cheaper here? "Obviously I can't carry that much in coins; if you don't use higher-denomination banknotes, can I have most of it in a bank draft or equivalent? I'm not familiar with your banking system and I don't have a local bank account yet." Does he in fact realize she's from another world? It's an objectively ridiculous idea, but she doesn't know what his other hypotheses might be for a clearly non-local mage appearing out of nowhere. Maybe he'll clue her in before she has to decide how much to reveal; once she has money she can approach other people (if she can identify someone else telepathic), or at least talk to him in private. But that means she can't introduce herself by her rank yet, so -
She eases back on her mental acceleration (it's not good to keep it up for too long). "Ah, apologies. I am Tanya von Degurechaff."