She weighed her options. The collaborations she'd gotten into with his father had given her insight into the realm of poisons, and it had also granted her access to his research. If some of the research had helped lead her to the conclusion that ultimately granted her the form that she had now even after twenty years of supposed aging, she wasn't keen to tell anyone about it. She'd sacrificed so much to get where she was today that she was not about to merely give it up again.
Still, she was the one who approached him. Olivia didn't trust Archie not to have an ulterior motive, true, but perhaps she could find one of her own. Peeking into his research might help her to make her own process more efficient. It wasn't that she didn't like killing for her longevity, but rather that it was sometimes a hassle. Every time she found someone else's blood on her hands she cared a little less about it.
"I think I could find some time for that," she replied after a moment, sipping her beer once more.