no it doesn't... she should still have one every two year once she is sexually active but she is immune to the different types of studs that cause cervical cancer believe....
Sexually active OR when you turn 18. My sis is 26 and refuses to get one because she's a virgin.

BG - Victorian clinics are crazy, and seem to just contact you at random. The first place I went to down there (in 2005) called me for the first time LAST YEAR as a reminder. I was pretty mad. Fortunately, this is something I keep track of, so had gone off to another clinic to get my next one done. But I let fly at them, and let them know they were more than two years late, oh, and by the way I live in Brisbane now, so please don't call me ever again, I want nothing to do with your useless clinic. It felt kinda good.

So don't rely on reminders. Keep track. See if you can sort of time them with an event - mine used to be with mum's odd numbered birthdays, but am about to swap to sister's odd numbered birthdays (next one will be at 6 week checkup)