There is no doubt that your daughter is suffering from a genetic bony metabolic disorder called Osteogenesis Imperfecta( OI) or Brittle Bone disease
She lacks an inability to produce Type-1 Collagen
in her body,hence her bones are weak & break easily.
Its not your fault that the ribs crack when you lift her; certainly not child abuse.
Firstly you need to see a Paedratrician and get the condition diagnosed. There are certain dos & donts you need to know. OI is incurable but there are some hopeful results with Bisphosphonates
), walking aids, etc.