Mysterious sources

It took a while for Shera to take in what she had just read, and when she did, the first thing she wanted to know was, "How did you get so much information?" 

After all, the information included such important details that had escaped the eyes of Santino and everyone else. How come he was able to find them out? 

"Don't look down on your man, okay? I have my sources." He answered vaguely, stretching a hand over to tease her. 

"Does Alexa know that her mother is not Lucy Leroy but Sianna Williams?" She asked. 

Leo contemplated about it. "According to my sources, Sianna vowed never to try to see or communicate with her daughter, or else the Leroys would take her life. Hence, she couldn't have told Alexa.