I have the Inreach Mini and love it.
But it's a monthly outlay on top of the cost of the device.
It's worth considering that the loved one will not be following your every move and really only wants to know that you'll be back safe.
Only yesterday I forgot to set the tracking at start of my walk. Did my boyfriend notice that it wasn't tracking. Nope. He got my message to say I was starting my walk and my message saying I was at the summit and the message to say I had returned. All of which he responded to without him commenting he couldn't see my track. He was at work and was only concerned I returned safely and was checking in.
It's also a learning curve getting the best out of any device you do get. For example the map screen that you share with the Inreach can get confusing if you don't filter the previous walks out, but if you accidentally set the filter wrong it won't show that days walk either. All simple mistakes to make and sort out for next time.
I think it's worth having a honest talk with the wife to discuss what her concerns are. Give her detailed plans of your trip and assure her of your back up plans for poor weather and generally make her aware of your skill level.
I like to point out to my mum that I'm more likely to die on the drive to the hill than on the hill. (I don't have the stats to back this comment up)
You could point out that you don't track her when she goes out. (If this is something you'd both like to set up here a link to some apps that will do that
https://wearehomesforstudents.com/blog/health-and-wellbeing/10-best-apps-to-help-you-feel-safe-when-walking-home-alone-at-night)
I also have a Garmin cycling computer which can send live tracking over mobile data. It works pretty well for cycling in mobile phone reception but you just get a spinning circle on the map when you're out of reception. Works pretty good in the Pentlands but I couldn't even start the track when walking up Ben Lui as there is no phone reception at start.
So I love gadgets and they give me and my loved ones some peace of mind but there is a cost and a learning curve and it's worth discussing whether these outweigh the concerns.