Online sub/dom advice

Good afternoon, all, hello from the UK! 👋

First time poster looking for a bit of advise from all you seasoned pros out there.

I've recently restarted an online dom/sub arrangement after a 3 month break. I'm lucky enough to have been able to setup an arrangements with a younger sub who has a real attraction to the kinkier side of sex. She is a size queen and loves being stretched. She loves bdsm and is open to increasing her pain tolerance especially when it comes to breast and pussy torture. She loves cum & pee play too, exhibitionist and voyeur play as well.

I'm wondering how you guys would proceed with this, how would you encourage this eager sub to keep pushing herself and how can I help keep her engaged and enjoying it?

Thanks in advance for your help and encouragement 👍