We're at an impasse now too where my mom wants a new laptop. She doesn't want to learn anything new (Mac OS) and both she and I don't want to deal with Windows 8+. I'm skeptical about just installing Windows 7 on a newer laptop (...driver/hardware support).
If I could get her to switch to Mac (she's in her 70s), I could set her up with a non-admin user account and set it up easily so that I can securely do remote support. The funny thing is that she would probably do it if not for my brother, who does support for a living and doesn't want to learn to fix Macs...smh