"How do I find them?"

Perhaps she does not sound as surprised as she could. Kitty had seemed intrigued in the tavern, and that she seeks her out is likely not because she found Leliana's personality engaging so much as who she was. Reaching for her wine, she takes a slow sip, considering Kitty before she replies.

"A combination of maps and ravens, usually," she replies rather dryly, humour not quite making it into her tone even if it was intended by the words. "I have recruited different scouts through different means. Some I have worked with before, when I worked under the Divine, or when I was a bard. I have met a great many people over the years, and that certainly did me some favours."
In other cases it earned her some enemies. Such things were inevitable. For every action there was a reaction, and Leliana did tend to provoke reactions, from time to time. "Others came to us at Haven, some to Skyhold. Their experience is... varied."

Pausing, Leliana watches Kitty carefully. "Do you ask out of some interest in becoming one yourself?"