Finding where the bus arrives

So, my sister is leaving from Tokyo tonight to go to Osaka. I am to pick her up in Osaka. The bus is with 123bus, but they told me they drop people off at different places depending on traffic. So it might be at the Hankyu hotel if traffic is good. Or it might be anywhere that is convenient if traffic is bad.

Now, we both don't have mobile phones and my sister knows nothing of Japan.
I went to check out parking lots around the station and asked at an information both where 123bus usually drops people off ... but according to 123bus info email address, theres no telling.

What should I do to optimize my chances of finding her as soon as possible?
I thought of flares and running around naked, but somehow that only made sense in my head.

Any advice?

Hi
If it is the New Hankyu hotel
by JR then why not meet there
or at a exit at train staion
as it is just across the street. Even at clock inside station by Granvia hotel? entrance. She has guide book?
with station marked in it?.
Good luck