Hi Ali.....any new news yet? Waiting is the hardest thing to do, especially when it's like this.
I'm praying that your Grandad will be okay. And it's normal to feel guilty at times like this....even if you have absolutely nothing to feel guilty for. It's just a natural human reaction when something bad happens to someone else. So don't be too hard on yourself.
Please let us know once you hear back from your folks. You're all in my prayers today.