Once you have recovered the Locator Device, you will find her in the upper room at the BioDome. But she escapes. Pick up her keycard and follow her to the Rock Lab. Get the geiger counter in the storage room (upper room at far right). When you use the counter to find the artifact, she will show up again.
he is in the garden of missfit toys
To enter the Rock lab, you need a keycard (dropped by Salerno when you find her) and purple eyes that you can get from the machine in the Research Lab.
After you chase her to the Rock lab, you can't find her again. When you use the Geiger Counter to find the Purple Artifact, she catches up to you.
When you find Salerno at the BioDome, she escapes through the airlock, and drops her keycard. If you have already turned your eye color to purple to beat the retina scan, you can follow her into the Rock lab.
Lunar Colony
She is hiding, trying to learn more about the alien artifacts before being forced to return to Earth. Drive to the Research station and you can recover the locator device that is tracking her. It is in the Infirmary.
It doesn't matter. Yours have to be purple to fool the retina scans, because you are not one of the regular astronauts -- their retina patterns are recognized by the security system at the Rock Lab.
There are no guards at all on Lunar Colony. PASE doesn't have any money in the budget.
You get the keycard when you follow Salerno to the BioDome. As she escapes, she drops the card by the airlock. You will chase her in the rover to the Rock lab, but you also have to have purple eyes to fool the retina scan. You get them when you are at the Research Lab (upper right by the airlock). To find Salerno, you have to get the tracking device from the Infirmary.
It is on the back of the lunar rover. To use it, click it and carry the hook to where you need it.
Lunar Colony became the 29th island released in Poptropica (not counting mini-quests) on September 6, 2012.
You turn them purple.