Hey @Sans911 @outlander 
@outlander I understand where you are coming from - and you too @Sans911
One of the main issues here - as I see it - is that sometimes we feel like we have ownership over threads and talk of threads as 'our' threads. I see this a lot but the reality is that no-one owns a thread and in fact talking about a thread as 'ours' can also put people off posting in those threads. This has been an ongoing thing I personally have had a major issue with for a long time - as it unintentionally excludes people. I can also see that you 'safe' place would definitely not feel like that at present however we must also be respectful of those that are using that thread to connect and receive support. I know this probably does not help you at this time @outlander but those using that thread at present have found their own 'safe place' to converse and support each other and that too much be respected.
My suggestion would be to start a new thread or continue to connect with your friends on one that already exists that you frequent often ie. the challenges of mental health wellbeing with @Sans911 for the time being until that conversation either reaches an end point or you feel it appropriate to start a new thread.
We all have to consider here the feelings of everyone involved and accept that any thread is open to whoever wishes to post in them ...and that the giving and receiving of support is valued and valid in ny thread - wherever one choices to converse.
@Sans911 I also understand your feelings as @outlander and yourself are very close and you find it difficult to see others 'taking over' the thread that Outlander frequents the most but in saying that anyone has a right to post where they choose and it is just as important that those members feel safe and supported as anyone on the forum - and from what I can see that relationship and that connection is as important as any for those members right now.
To interrupt that conversation, to 'stake a claim' on that thresd would go against everything the forum is about ....inclusivity, belonging, freedom to express our concerns/problems/difficulties, connection and support. So I would suggest seeing if that conversation runs it's course, posting and connecting elsewhere and/or starting a new thread.
I do very much get both of your feelings around all this but I also can take into consideration those on that thread and how detrimental it would to interfere in the support being given and received there at present. It is a tricky one but as Outlander feels like her 'safe place' has gone but it also is not the only place she cn find that support herself.
Whilst this may not be what you would idelaly like me to be saying I do hope it helps in seeing all sides and you both can work out a happy medium for the time being.