@Walter_vi_Britannia A bunch of manga with slaves never give them better clothes it is unsettling and dehumanizing. I think it is done to make them easier to pitty but idk.
At this point, she should just tell him she wants him or grab his dick.
If you want to make a move this badly, just make it. Don't beat around the bush, just be straight-up honest about your desires. If he rejects you, then you have your answer.