Any attorneys here?

I wonder if you could answer this. If not that's fine too but I was hoping to find the answer quickly:
My dad gave my sister POA. In the POA agreement it says that I can be the POA in case of where my sister is unable to be POA or unavailable.

What would be considered "unavailable"? She is going to be on vacation in 2 weeks.

If there's anything that needs to be signed during that time is that ok if she's on vacation - is that "unavailable" or if it could wait shouuld it wait for her to come back? If it's something that *has* to be signed I guess I could (and I have health proxy) but I was just curious.

I'm also looking into getting joint POA anyway but was curious about this issue. Thank you.

Re: Any attorneys here?

yes I am an attorney....Unavailable usually means not alive or for some reason not willing to accept the responsibility. If your sister is on vacation during the time and completely NOT able to handle an emergency matter than yes if you were the alternate POA you would step in. But unavailable means basically that she cannot be reached by any means or she refuses to make the decision. A two week vacation in the US probably wouldn't qualify. Hope that helps.