Why not put the computer in the room with the GF, so you can verify the set up is good while you’re at the machine (and tweak any material placement and hold downs), and then you can “walk away” after it starts running?
Though as noted, the SAFETY issue of not being at least in the same room are high, and as manufacturer cannot provide a means to operate the machine remotely without a lot of legal risk (e.g. get their pants sued off by someone whose material does start to burn & wasn’t there to see it & hit CANCEL to stop the machine and use a fire extinguisher before the fire consumed their unit/room/house). So remote start will never be an option from them. Though I love the remote finger device (and his whole shop!), still can’t overcome the safety risk, and prefer the little extra bit of exercise physically having to move to press the button gives me.