Her early departure was agreed after discussions with City Hall.
MP, whose friend Khadija Saye was among the victims, says Cotton must “take ultimately responsibility” for brigade's failures as PM backs national guidelines on tower block evacuations.
It also accused the brigade’s commissioner Dany Cotton of “remarkable insensitivity”.
Mental health issues are responsible for the most sick days for first time in brigade's history.
Commissioner of the London Fire Brigade Dany Cotton spoke at the Grenfell Tower inquiry on the choices made in battling the fire. The inquiry has asked questions about the LFB's "stay put" policy as well as issues with equipment, training and communications.
Why should I and women firefighters across the country still have to see us being referred to as men in every newspaper, television advert, classroom and even official documents. Sometimes people say fireman to my face and when I politely correct them they usually sheepishly agree that it's an outdated term... I want to shake off outdated language which we know is stopping young girls and women from considering this rewarding and professional career.