YA Paranormal — both parents die while heroine is pregnant; sequel follows their daughter (KU read ~2016–2020)

[Hailey]

Trying to find a YA paranormal series (read on KU ~5–8 years ago)
I’m hoping someone here recognizes this unusual combination of plot beats:
• Small-town / high-school setting. The heroine lived with her uncle because both her parents were dead.
• She meets the hero at school — he might be an angel/fallen angel or another supernatural type.
• At the end of the series she becomes pregnant, then she and the hero die together fighting an evil supernatural being of some sort.
• A later sequel (or separate second series) follows their daughter as an adult in a beach town — the parents are reincarnated there and are reunited with their daughter.
I’m pretty sure I read it on Kindle Unlimited sometime around 2015–2020. Any titles, authors, or even KU indie authors who ring a bell? Thanks so much!