"My Nan was sent home at 3am"

My 84 year old Nan has type 2 Diabetes, High blood pressure and cholesterol, and possible Dementia. She is doubly incontinent and is mostly confined to a chair. She was sent to hospital at around 9pm yesterday, in severe pain, with an impacted bowel. We couldn't fault the paramedics. They were great with her. The staff at New Cross Hospital weren't though. My dad and uncle were at the hospital with her and, after a wait in the A&E assessment bay, were told that Nan would have an Xray, some treatment (the paramedics said it would be an enema), and then be sent home. The time was getting on at this point and my dad and uncle had to get home. Around 12.30am they left my nan and went home; with the plan that my dad would call the ward around 2am to see what was going on. Dad spoke to a very rude nurse who abruptly said that Nan had been for her Xray and they would be sending her home soon. Dad only had time to ensure she would be helped onto hospital transport and into her home afterwards, before the nurse hung up.

Today we learnt that Nan had her Xray and some treatment (we don't know what exactly) to get a tiny bit of the blockage out. Apparently she was then discharged at 3am because she was supposedly medically OK. Now I understand the beds are needed, but my Nan is elderly, with various medical problems. She gets confused easily and can't look after herself properly. Surely being in severe pain, not being able to move much at all, and it being the middle of the night, would warrant her being given a bed and put under observation before having the rest of the blockage removed? She has now been left with various laxatives to take in her home where she cannot access the bathroom quickly. The family are very concerned about her treatment by staff.