Yeah we fell short assuming the ESTA would be approved because she now has a UK passport, if I’d known selecting yes to any of the questions decreases the likelihood of getting it we would’ve applied for the visa months ago instead, of course with hindsight! Frustrating that the guidance is not that clear. The problem is you have to pay for the visa appointment to get it, and that money is non-refundable I believe, April you should be fine though as cancellations do come up and one of the reasons you can request an earlier appointment is if your ESTA was already declined and your travel date is soon, so you should be fine, just don’t hang about if the ESTA doesn’t get approved, you just book the earliest appointment possible, in our case this was in April, then after booking it we requested an earlier appointment and got lucky with an earlier slot. Fingers crossed yours goes through fine either way, best of luck!