Leila planned to make their area a center for the participants of the practicals to gather on. Although she does not think much about the lives of others, it would be weird if only her followers survive the whole ordeal. The other people have to live so that no suspicion will fall unto them.
After all, humans in their nature are suspicious creatures.
As long as they notice something odd, they are more likely to deal with it than letting it be.
She does not want her people to suffer suppression and isolation from their own kind.
In her plan, she decided to gather as many people as she could in the shortest time possible. Which is not a hard thing at all as she has her clone to help her out on most things. Other than that, the adults are personally doing something to ensure everyone's well being.