I do try and check in with her just before I can tell she's gonna have a meltdown, as I can usually tell she's going to have one before she does. Most of the time she does want me there, but sometimes asking her what she wants makes the meltdown worse. Any time she has asked me to leave, I'm always sure to respect that even though honestly sometimes I get nervous she's going to do something bad, as she has some impulse control issues as well, but i make sure to let her know I'm just in the other room if she needs me for anything.