A new pet

Prisoner
Soon after freeing Cassie and going on a date with her, Lust Doll would be able to capture a Bandit Girl after defeating one in battle, and take her captive to the Safehouse. This would lead to one-time interrogation scene; the only meaningful information obtained would be the bandit's name – Alissa.

Annoying pe(s)t
Alissa, being very chaotic and playful, would try to interrupt Lust Doll's fun-time with Cassie at every opportunity, not realising that they want some intimacy, including attempts to masturbate together, take a shower together, and even attempt to make Cassie change her clothes repeatedly, ruining Cassie's mood and interest to try any of this activities again.

After Lust Doll takes some sleep, Cassie would confront them about Alissa and insist on setting up some boundaries: if Alissa is gonna stay here, she must respect the rules and the other inhabitants. Alissa would comply, and the issue would seemingly resolve itself.