I found this quite difficult to correct. I think this is what you meant to say but I can't be sure.

She's been really busy!

But nothing was how she expected it to be when she gave birth to her baby. Life became really busy and difficult at times.  Her heart would break every time her baby became sick. Sometimes, she could barely breathe and wouldn't be able to go to sleep for hours. It hurt her more than a cut or a broken leg. It was killing her as she watched him squirming on the bed. She hoped for a miracle and that angels would help protect and watch over her baby. Hope was the only thing that kept her going through her daily life. But inside herself, she was fighting demons.