Hello Loosestrife,
I include this link for you to read and hope it will help.
https://bpdfamily.com/message_board/index.php?topic=79032.0Suicidal ideation, threats and suicide attempts can be really frightening and overwhelming both for the pwBPD and the non. It is very positive that your partner is receiving psychiatric help and support and that you have identified a T.
I too contributed to triggering my dBPDh, he was suicidal on and off for about a year and took a number of impulsive and planned overdoses. He is more stable now.
It was this aspect of his BPD that brought me to this forum.
I would respect your partners request for space for now especially if they feel as though the relationship is triggering them. Give them some space to focus on their care and treatment.
I can hear it is hard for you that you haven't heard from your partner and I would be worried too it's a lot to deal with.
Maybe let them know in a brief text that you understand their need for space at the moment and that their getting support is important to you too. Ask them to contact you when they feel able. Or something like this.