It's not that she's skeptical, given who she's already met, been told certain things. It's that she doesn't know how quite to say that maybe it's not the best thing to be announcing to anyone off the cuff, and internally just hopes this man - Yato, he said his name was - will be fine after declaring such a thing.

"As you wish. I'm Helena - it's very nice to meet you, Mr. Yato." Wait. "Lord Yato?"

How does one properly address a god? Pollux had been so informal...