Stuff for me

Let me begin with saying I respect everyone's dynamic on here. What I want to know is when is okay to break protocol of contacting a taken sub? 

The reason I ask....some time back, I was asked to be a Dom to a sub, I accepted prematurely and things transpired in her life, which forced her to ask for release. Though I didn't expect it, I  knew she needed someone watching over her, but I respected her decision and released her. Since this , she has found her a new Dom, based on her blog. Even though I am no longer her Dom, does not mean that I do not still care for her well-being,  am happy that she has found someone that apparently is her fit. She is an avid blogger. 

Now the reason for the question of breaking the protocol of contacting a taken sub....I have not seen her blogging in quite some time, which has me concerned for her welfare. What do I do, if anything?

Or should I not care?