@changinghairstyle
Seriously? You can't see the difference in 'difficulty level' between
ONE relatively healthy lady packing one bag (maybe two) and getting on a train/bus and sitting whilst someone else 'does the driving', then checking into a hotel/B&B, & unpacking that one or two bags? Even with your health conditions, some of which I share, you could manage that.
and
Two people packing a car full of THREE young kids' paraphernalia, luggage, snacks for trip, lunch for trip, diaper bag, car seats, et al. And then loading THREE kids + themselves into the car and driving 3 1/2 hours probably 4-5 hours whilst trying to keep the kids entertained, along with multiple stops for potty, changing nappies, eating, calming an upset child. And at the end of it having to unload it all, set up paraphernalia, unpack luggage, and then clean up the car.
Now that I've laid it out for you, can you now see the difference?
My DH and I moved 10 hours away, over 600 miles. My parents came to us the vast majority because they knew what a hassle it was for a family with young kids to pack and drive. We usually went down there during summer for a week or two when school was out.
You keep mentioning her family and that they go there. How far away do they live from them?
Bottom line is, if you want to see them then you must travel. No amount of pouting or feeling aggrieved is going to make them change their minds.