I literally do think about table cloths and the hypothetical details surrounding them. After actually testing and researching the topic I've come to the conclusion that, unless you're hiding things under the table, the best option for use and aesthetic is the one labeled for your table size.
If you go too big, you have to balance the hang or clip it because rubbing against it when you sit will cause it to drag, the cat will pull on it, it bunches weirdly, that'd all too much. Just allow for a 6-9cm overhang on all sides, literally what the properly sized cloth will do. Have her measure the table and get that size.

I've stayed at dozens of ~$80 a night motels in my day and never once has it been a negative experience. I check the room over with a UV light regardless, but I've never found anything. The service is always under paid burnouts so if you're cool they're cool. Plus the vibe is always this beautiful liminal emptyness that you can't get anywhere else.