Madgran77
Without going into details I am actually not ignorant regarding BPD, including spiralling and am well aware of the aspects of that condition, the treatments available including the adapted CPD.
In this context, I have very much advised Lady to utilise a strategy that just might create a situation where she recognises the support she needs and utilises it as described . It also actually calms things down for her and for her son which should help both of them.
As this process continues yes she does need reminding and so far she is responding. For instance her stepping back and accepting that the "lifes too short" message wont help! Maybe she will need reminding again, who knows. But she is trying hard to listen and take advice within the difficult manifestations of BPD.
I see little purpose in continuing this discussion as I dont feel it is helpful to Lady to have herself discussed in this way on this forum; I am uncomfortable with that situation having arisen. Apologies Ladysu it was not the intention atall.
I suggest Lady that you continue your "calm" strategyvwith your son; do talk to your dad; do consider talking to your GP or other support you may already have access to as this is a particularly difficult stressful and triggering time for you 
In this context, I have very much advised Lady to utilise a strategy that just might create a situation where she recognises the support she needs and utilises it as described . It also actually calms things down for her and for her son which should help both of them.
That’s about as much help as advising someone with a broken leg to just keep it strapped up and to take care when dragging themselves up and down the stairs, when the actual solution would be medical intervention.
I see little purpose in continuing this discussion as I dont feel it is helpful to Lady to have herself discussed in this way on this forum; I am uncomfortable with that situation having arisen. Apologies Ladysu it was not the intention atall
This, I agree with. I suppose it was inevitable however, when so many people either have no idea of the realities of a condition such as BPD, or seek to trivialise untreated BPD as “mostly manageable”. A good example would be referring to it as a “side issue” in the person’s interpersonal relationship problems, when the reality is that BPD directly results in relationships that are chaotic, intense, and conflict-laden.
The only other thing I wish to say is that Ladysu’s condition is not her fault, at all, but that it is absolutely her responsibility to seek the appropriate treatment for it, that it is never too late to engage with DBT and that I 100% believe that her son and DIL would be supportive of her in taking these step.