So I'm 16 as is my partner and in November I started a long distance relationship with someone from Kansas, I'm from NY. So we've been really close for a while now and they have had some times where they'd cry for a while and they often say shit like "I wanna die" and they dissociate often. But over the past weekend they had a really tough weekend with their parents and responsibilities and they don't have a good relationship with their dad because of past trauma. So recently their dad has been collecting their phone, that they paid for, every night at 10:30 so eventually they said no fuck this and just decided not to turn their phone in. Then their father decided to set restrictions on their phone making it so their phone can only call from 10:30pm to 6 am. This was the final straw and they face timed me from their laptop and started hysterically crying for a solid hour talking about how tough everything is and saying "I'm scared I don't wanna die" and since Sunday night they haven't been the same. During the day they're pretty normal but once they turn their phone in they're a whole new person like they're quiet and just stares and doesn't say much and it's really confusing how long does a mindset like this last. I am flying into town in a week so I'm hoping they go back to being their normal selves by the time I am there.

Tl;dr My S/O had a kinda mental breakdown on Sunday night and they haven't been the same since, they're fine during the day but during the night they're like a whole new person. How long will this last?