Rex was taken aback when he heard her words.
Previously, he had contemplated whether he should be distancing himself until the matter with the Executor reached its conclusion. Obviously, the silhouette of blood's suggestion tugged at him, compelling him to consider it seriously.
Maintaining his distance, especially given his low sanity stat is a matter of urgency right now.
But he was now put in a spot due to Evelyn's words.
Almost as if she was able to read his mind completely, she said the exact right words to him.
"I don't think that me staying here is safe for you and the others"
"Nevertheless, you're a part of this, a part of us. Also, it's not like we didn't stop you-"
"I was weakened, Evelyn. If not, this could end very badly"