English conversation teacher in Chamberi - Saturdays

Hi,
I am unable to take this class and so need someone to help this student. She has just started a new job which requires speaking English and she hasn't used it for long.
She's B1 for reading and writing but she finds it very difficult when it comes to speaking.
She lives in Quevedo (Chamberí) and is only available Saturday mornings.
Please do get in touch by email so you can discuss the details. 
Thank you!