Alexandre Dorothée Marie Adriaan Charlotte Escher (14 June 1945 – 31 May 2021) was a Dutch mental health advocate and researcher.

Escher began to work at the University of Maastricht, department of Social Psychiatry.

She became also a senior staff member at the Community mental Health Centre in Maastricht in 1987.

Sandra organised eight annual well attended congresses and helped voice hearers to write their presentations.

She is also credited with developing Experience Focussed Counselling together with Marius Romme and Joachim Schnackenberg.