One doesn't wish to be alarmist, but . .

There is another possible interpretation to her giving you her melodeon, you know. Clearly we're not as well placed as you to judge whether she's over her "suicide is the only way out" phase, but unles you are very certain there was never anything in the suggestion then I believe you should think very carefully about:

Asking her straight out whether she was serious when she talked about suicide,

Do your damn best to persuade her to seek professional support (offer to go with her

Extract the most solem promise you can from her that the melodeon gift isn't a "parting gesture".

As I said, I'm sorry if this seems alarmist . .

George