How can I tell if mom's bruises are from abuse?

My mother bruises very easy when she rubs her arms or her face. However, there is a difference with bruises. She was in a nursing home/rehab center & was complaining about the treatment. Then another patient told me of of abuse that was happened when my mom didn't stay in bed that night. I took mom out of the facility for the day & checked her over. Took pictures of the bruises on her back and arms as I cried. I then called the VA because my mom is a vet & they moved her immediately to another facility. I also took the proper steps in reporting it as it was happening to other patients. I ended up bringing her home with me a few weeks later. I lived 2800 miles away & probably would have never been able to rest. It turned out to be the best decision I ever made. She has been here 5 years & we have had a wonderful time. I wouldn't have missed it for the world. She is 89 now & slowing down. And it is difficult. I do have a background in nursing so the patient care is a little easier for me. Trust your instinct. The nursing home kept asking me when I was going home & something inside wasn't settled for me. My mom went there after surgery & wanted to stay in her hometown so I wanted to make sure she was settled & comfortable. I am glad I waited.

Get a baby cam. also called a nanny cam they are cameras mad to look like stuffed animals. and they record around the clock and feed directly in to your computer so you can check up on family members while at work