Auto insurance question

Have a question, it got me thinking after getting rear-ended in Dallas on the weekend (covered by card thankfully).

I'm in the same "household" as my sister, I was on my sister and brother in-law's Geico auto insurance and my old vehicle (now sold).

I moved to Australia in January and my insurance was subsequently cancelled.. or my name removed from the auto policy.

So the question is, do I need to get on their insurance (obviously I'll pay the diff) if I drive her car regularly when I come to Houston (have a few trips this year) or can I take out my own insurance and get the car & myself covered? My address is still the same address as my sister's house - so I'd be a "household" member.

Any information would be greatly appreciated.

 

Thanks - yeah will try give them a call.

Trying to figure out if I need to be listed on their insurance policy if I am a "household" member to get covered on the car. It would make sense if my address might be different and not regularly use the car.