My experience with the four I listed are that they are anything but soft. They tend to be very firm and she needs the opposite. It has Continentals and they are very stiff as has every set we have ever used. The more like a marshmallow, the better.
Can you downsize to the 17" rims if found like from a Latitude? That will get you more sidewall for extra cushion. If 16" fit from something even better. It's a Jeep Cherokee, not designed for luxury cushy ride.
I know you said no Michelin or Pirelli. The Defender LTX M/S I have on Pilot is so much better than the factory Bridgestone's it came with. Smoother, quieter and great all around. You don't show location but it is not 3PMSF. The CrossClimate2 gets really great reviews for all around except loosing some MPG's. The Pirelli Scorpion Verde AS2+ on my daughters CRV are a lot quieter and better riding than the old/worn Michelin Defender T&H it came with used. I bought them just for those reasons. Pirelli P7 on my Accord is the same. I bought for the reviews and tests of great ride, quiet, wet. Night and day compared to the Goodyear WeatherReady that was on it. They rode stiff and sounded like AT tires. The Pirelli is 17" vs 16" GY on that and better riding. My vehicles all run true winter tires so I can't give you snow experience on them. My sister put the Michelin CC2 on her RAV4 Hybrid year round, she loves them as compared whatever came factory. She said much better wet/dry/snow, better ride, less noise.
The Avid Ascend GT was one I was contemplating for my Accord and my sons Forte from reviews and tests.
Do not get the GY WeatherReady if you want quiet and soft.
With your wants I would get for me for 3PMSF, Michelin CC2, Nokian WRG4, Toyo Celsius, Vredestein Quatrac Pro, General 365 AW.
Non 3PMSF Conti TrueContact tour, Pirelli Scorpion AS+3, Yokohama Avid Ascend GT, General RT45
Many people over the years have complained about Continental having sidewall that are too soft and mushy. They wanted more steering response and less cushion.
Do they need or want more of an AT type tire? It is a Jeep Cherokee. My Father-in-law has a Renegade. He wants the aggressive looking AT type tire. He's 77 not going offroad etc but it's the image. Wifes Pilot defender LTX goes a lot more off road than his jeep. My Accord has seen more mud and gravel roads than his jeep.