@Nicola M I've read that gestational diabetes means you are more at risk of either developing type 1 or type 2 later. It seems to be a sign that there is a tendency for a person to develop diabetes, and it used to be assumed that they were more prone to getting type 2, but now it's also possible that it's a sign of possibly getting type 1 later. Since type 1 runs in your family you might make sure she is aware of that.
Diabetes that develops during pregnancy affects millions of women each year. New research suggests many people with gestational diabetes will go on to develop diabetes later in life outside of pregnancy and there may be early markers to predict it.
www.healthline.com