My grandmother broke her arm...because of me? 😔

So my grandmother is the person that visits the post office whenever we order something online. The reason is because we order things on her address (for various little reasons). She loves when she has to get a package for us, she loves helping but the only problem is that she doesn’t drive, so she walks there.

2 days ago she walked to the grocery store to get some ingredients for the food she was planning to do for us. After that she went to the post office because we had a package. On her way back home, she stepped on little rocks found on the pavement and fell down and broke her arm. It was so bad that yesterday she had a 4 hour surgery (her second surgery in the past 1 year. She had surgery again on her other hand because she fell down again a year ago and broke that too in a similar way as this one).

I feel so guilty. I feel like because the package she got that day was mine, it was due to me that she fell. For the past year she is sad and sometimes cries and feels weak due to her other broken hand, and now she has 2 injured hands.

Is it my fault this time? 😣