It sounds odd to me that someone would break bones by walking, or stumbling over a rock. I know that Halle Berry has diabetes. And I know that people with long-standing diabetes (I believe she was diagnosed in her early 20s and is around 45 today) are at increased risk for fractures - type 1s because the low levels of insulin in early life lessen peak bone mass, type 2s for reasons not quite known ... poor vision, vascular complications, hormone imbalances. I suspect her diabetes contributed to her bone break.
Also, women at 45 are usually going through perimenopause or menopause, a time when estrogen and other hormones wane. These hormones help maintain bone.
An aside ... I thought Ms. Berry had type 1 diabetes until I read an interview where she claimed to have weaned herself from insulin injections by following a specific diet. Since type 1 involves loss of the insulin-producing beta cells, a condition not easily compensated by diet, it made me think she really had type 2, or perhaps MODY (Mature Onset Diabetes of the Young) where some insulin production persists. Although her diabetic coma at an early age does point to type 1.
Type 1's risk for osteoporosis is so high, and given her age, she may have been prescribed bisphosphonates. As I've written, these drugs can in fact increase risk for fractures.