Uhhh are you sure it‘s Version 0.10? New Succubi is in the brothel After the new aveline quest. It Should start at the Big door in the Mansion with a yellow Text Menu choice but should also say so in MC and Avelines Card. You might have a corrupted Save somehow but we didn‘t have any Problems with up to Date Saves yet (last 2-3 Patches is fine normally)
Mara is getting her Card Next Patch as she will be a bigger side Character yes.