We have many members who fly with an aneurysm and with repaired aneurysms, both ruptured and unruptured. There are many, many topics here about the safety of flying. I recall one pilot actually explaining why it was safe to fly, something to do with the pressurized cabins, I believe. We also have a member who ruptured as they were going to the jet, he didn’t know he had an aneurysm. He’s recently become a therapist! We have @Pilotpacking who could probably give you more information since he’s been a commercial pilot for a very long time and is the one who comes to my mind. Look him up using the search feature.
I get why you’d be comparing your cousin to your mom but remember they’ve got different health issues. Your Mom’s doctor is using the word “probably” because he doesn’t know but thinks it’s ok. We don’t know when we are going to rupture until we do.
I wouldn’t want to have to drive 10 hours after a 5-6 hour flight, so I get those logistics. If your mom is getting a femoral entry, I’m unsure if she’ll be comfortable on the ten hour drive back home. On one of my DSA’s I ended up with a huge hematoma and the 90 minute drive home wasn’t really comfortable but it was bearable.
If you and your Mom choose to fly make sure she has some noise canceling buds or headphones and sunglasses, darker the better just in case or a sleep mask she can use. Some of us end up having sensitivity to light and sound. I do have a question if you don’t mind. How is your mom going to make it back and forth for the follow up appointments if the doctor is ten hours away? I know after I ruptured it allowed me to use the “short bus” with our public transportation and they said they could take me to the hospital in W/S for follow up appointments but not the follow up angiograms where I would need someone to drive me home and be with me.