Well, I've been thinking on the subject, but I am in a agony of indecision over what wouuld be best.
StillC: Gatita can get a Mexican passport in a day, it's actually a very efficient service. Getting a UK one at speed is nigh on impossible due to the fact that the UK embassy in Mexico no longer issues passports. All paperwork has to be posted (by courier) to Washington DC. But even before that, we have to get a UK birth certificate for her. The British embassy in Mexico has had the relevant documents for its issue for over a month and a half, but do not seem to have got around to sending it to me yet (by courier again).
With a Mexican passport only Gatita cannot do the visa waiver programme; for obvious reasons any Mexican wanting to set foot in the US needs a visa. But Mexicans don't need visas in the EU, so we could technically still go, if I could find a flight that we could afford.
Racing: Gatita is being bfed and so I can't leave her behind. Kittenito, yes, but Mr. H works crazy hours (10am to 9pm) and so, would need extra outside help to manage my absence. This could feasibly be done, but I think it would be traumatic for K seeing as I am the parent he sees most of, makes all his meals, gives him his bath/reads his story etc etc and although he loves it when his papi does any of the above at the weekend, I'm not sure he'd be happy with anyone else for a whole week. Plus of course, I'm not sure I could leave him for a week. And certainly not, if the op were to go ahead (which Mr. H says we can find a way of posponing....)
Thus I can technically go, but it would be upsetting and stressful for me, Kittenito and Gatita ....