mixed emotions from Lily

Ever since Lily has feared the sirens from a ambulance or noises from the TV because she thought it was her father coning to take her away its given me the thought that she's got to crack at some point, I also think that the mixed emotions that Zach has given Lily is adding on to her fears. If Lily brakes down and decides to tell somebody the truth about her past life who do you think she will tell? I've been torn between it being either Zach or August, and if she told August and August told all of the other sisters what do you think June would do?