hi
@Jane Gregory
hard as this may be to do, please get the Police involved ... they are much more used to dealing with such situations than we think ... they can refer on to Social Services ... and having them attend will be useful as they have to record visits and that record can be used as evidence to Social Services that much more support is needed ... if you have a bruise, take photos
do also contact Social Services today and let them know exactly what happened ... tell them you believe this is now a 'safeguarding issue', that your MIL is a 'vulnerable adult' who is 'at risk' of causing harm to others due to her behaviour ... remind them that they have the 'duty of care' to keep her safe and provide the level of care she needs
do call the Support LIne to talk this over with one of the knowledgeable advisors in real time