It sounds like she doesn't want to try (I would be so annoyed...the "waste of time" thing really gets to me) so she probably wasn't the best therapist for you. Therapy helps with grief and maybe she just can't deal with working with clients who are grieving. (Her client list must be short.) Anyway, she should have given you names of other therapists for you to see that might be a better fit your situation though.
Can you look at a list of providers who are options for you? I would call a few if possible and see if you can talk to them on the phone first for like 5 minutes before you make an appt. (some want that before you come anyway) so they know your situation and you can get a feel for the T.
I am so sorry this happened and hugs to you.