She asked the boy to send pictures of his penis, sent him nude photos on at least two occasions, and sent a video of herself showering.
The photos included a photo of her using a sex toy, Kent Online previously reported.
The 33-year-old appeared at Woolwich Crown Court on Monday, June 30, after she pleaded guilty to four offences:
Knox was due to be sentenced but the Crown failed to provide a barrister to prosecute the case.
Judge Charlotte Welsh said: “Ms Knox I’m really sorry we cannot make any progress today, but without a prosecutor there’s not much I can do.
“I’m adjourning the case to July 14. Please make sure you attend then.”
Knox was granted bail until her sentencing and she will be required to sign the sex offenders register as part of her notification requirements.
