Sure enough. Fixed for v0.13 so Alice can't duplicate herself.
Weighted rolls affect random events, mostly around the Estate. For example, the Folk nomad camps will appear more often, and Willow's extra scene (if you have the Dark Mark and go upstairs) is guaranteed to trigger instead of being a 1 in 5 chance.
For the extra events - Lalita's isn't that unusual in how you complete it. Just to save you from wasting time looking, it's within the mansion. Ivy's is a little different in that you have to bring someone to her instead of the other way around.