those are the hardest times to hang in there because it is nice to get the validation through time and attention.
sometimes it seems like D/s is about the Dominant ways to keep the submissive focused, on task, on edge. it isn't a one-way street, right? none of us are miind readers and life gets hectic.
i always see it as my job to take the tension from my Daddy when he doesn't have time to spend. it's little things you can do to make her life easier, let her know you still care and want her as your Domme.
sounds like you're on the right track! have a great weekend.