If you've just changed time zones my advice for the first day or two would be get out as much as possible in the daylight and keep things dark at night to help reset her internal clock, but at least in the first 24-48h let her sleep when she needs to. In the daytime maybe don't let sleeps go over a normal nap length before waking her (so maybe 2h or so) but allow shorter A times if needed. At night, if she needs to play for a bit then go with it, but keep lights low and activity low-key, and get back to bed at first sleepy signs. Do BT at the normal time at local time. So even if she was up at 2am today, BT is not until at least 6pm local time.
After the first couple of days I would just pick your set times and go with it. Be prepared for a rough few days, but hopefully it will be so much of a shock to the system it helps you get back on track x