Every nostr event has a lightning address now, so you could use that to generate invoices for the person who wrote the highlight and the person who wrote the note you highlighted. 

https://www.lnurlpay.com/note1qdlaf0l4aluf45nadlx56vfap5hdcxea08ssde7gegeau54yjc6qqjsdyd@lnurlzap.com

https://www.lnurlpay.com/note1xgg3ltnfapp05v37s7dx4z23hjgxnqfudycatl0q0yrdkf5ty6fsvvjxja@lnurlzap.com