idk if that's actually possible, but for it to be in any way, wouldn't you need to stretch over time to take that thing that deep in that size?
But wouldn't you have to ease into it anyway for it to be safe? Like yes it's not stretching your rectum width wise but aren't there muscles deeper inside that you need to be able to relax so that you don't rip anything? Especially the sigmoid that does the s shape, I doubt you can just jam trough it right? <.<
honestly i like that she didn't end up with anyone and i'm just gonna headcanon her as aroace, but she would've definitely ended up with someone if the story didn't get cut short