No. The ability to manage apps and access the app store in iTunes is not available post 12.7. The Mobile Applications folder is still there if you upgrade, but is not used by iTunes.
All her apps and my apps were exactly where they were supposed to be after we restored our iPhone 11's. It will take a bit for them to install over the air but not much longer than they did from the PC.
Perhaps someone on the forum can speak to adding 'old' apps by dragging/dropping or copying/pasting them to a device. Or adding them to the Automatically Add to iTunes folder as a way of replacing a discontinued app. There may be third party applications for managing apps on iOS devices but I have not done any investigation.
And lastly, as someone who 'manages' devices for the family (I have an 89 year old mother-in-law) you will get no argument from me as to the ease of app management in iTunes. But times change and I accept that. FWIW, I do all our device management with WiFi. I do use not our data plan to do any device management.