It seems like under the circumstances, your therapist is doing what she needs to do to take care of herself so that she can be "available" for all of her clients. She's going through her own stresses and grief right now, and probably very justifiably, has to set some boundaries for her own sake. Is she still keeping up with her usual session schedule (with allowance for the recent crisis in her own life which is perfectly understandable)? That may be the best she can do right now. That isn't about her not caring about you; it is about her needing to keep some balance in her life as she regroups after her own personal crisis.

If her availability isn't working for you, is it time to consider a different therapist? If you are in serious crisis, what other steps can you take such as a crisis line or the ER? If it isn't that pressing a crisis for you, what other coping strategies can you try to implement to help you through those difficult moments between sessions?