asitis, being blunt why are you thinking about these things? Are you using her cold as an excuse to step off the DB path? You are detached/detaching right? So deal with things like this as and when she asks, nothing more. If you sense the kids are going to be unduly impacted, maybe take action even if it's not requested. The kids can look after their to a certain extent and their being around will probably lift her anyway. Get back to the focus on your hectic schedule and if something major comes up (it won't) deal with it, you aren't there for her anymore, you are there for you and your kids.
- Nobody has ever learnt anything important from happiness and success; problems make us grow - Consult your plan, not your feelings - If you haven't set goals, how can you expect to achieve anything?