The title briefly describes what my girlfriend fantasizes about and we're posing this question to mainly help us in finding erotica that aligns with this fantasy. We enjoy reading erotica together as a form of foreplay but have trouble finding stories where the focus is on being sexually used but also avoiding any humiliation or non-consensual sex.
For example, she loves sex stories involving monsters like this one. This story is great because it focuses on these women being dominated by these lustful creatures and ultimately enjoying the experience. The problem appears when we use the term "dominance" or BDSM when searching for sex stories because doing so usually results in stories where some of the participants are subjected to pain and/or humiliation and are not willing participants.
In short: How can we better find stories that focus on dominance and being used as a sex toy but avoid stories where some of the participants are humiliated or subjected to pain.