I feel like this girl I've been seeing is about to swing from my branch to another.

I want to completely block her off of everything and ghost her completely but there's one problem... we have a trip scheduled and paid for to a different country at the end of this month.

What's the best thing to do in this scenario?

Call everything off aka wasted money or maybe go on the trip after all, fly back and tell her im going to a friends place once we land (a plate I know lives close to the airport) while she takes the bus home (2h trip) alone and i immediately delete/block ghost her?