ACT 4 - Singing Caverns Boss disappeared and now im stuck

The act 4 boss in the singing caverns.... she jumped on the platform into the water and never came back.. now I'm complete stuck here..

Can't portal because I'm in a boss fight. I've been running around for 10 mins, and nothing is happening.

haha I'm a dummy, I didn't know there was a respawn at checkpoint in the pause menu..

samn damn thing just happened to me. Forgot about the respawn at checkpoint in Menu, thanks!

Thank you! Forgot about that respawn option as well :D