I'm giving it 2 chapters tops before Sensei's back go stroking his dick lol.
I don't think her words mean jack at this point, she's a very horny woman with a very specific fetish for young boys like Aki and has very little sexual inhibition, she's gonna break her own promise soon enough lol. But I do like a good separation arc to turn up the angst and eventually release into a fruitful reconciliation, so this is great for me lol.