Hi Jessica,
We have a support group in NZ called SANDS, which is possibly a similar thing. I have found it to be a very comforting group to attend as it kind of validates your feelings and makes you realise that some things and feelings are very normal in the grief process. Its comforting to meet others who have or are feeling similar because they know what you are going through(although I wish nobody had to experience these feelings), which friends and family often don't understand 100%.
I know from a SANDS perspective that they will probably introduce themselves and tell you a little of there situations, and let you speak about yours if you feel up to it. With SANDS there is no pressure to speak or attend until you are ready, but it has been a real lifesaver for me at times, and I will be forever thankful that Sands and TLO were available to me.
I hope it goes well for you sweet
(((Hugs)))