I agree that you should give it another try, that it might be a good idea to bring up how you felt left out, and also that flukey things can happen the first time you show up. Adding another member--no matter who that person is--will change the dynamic always and that can throw off any group temporarily.

As for your intense sadness, you are depressed, honey, and it's been bad. Really bad, and for a long time too. You're worn thin. Things being less than ideal at the group would logically deepen that sorrow for anyone. It's not just you being...anything at all! I think your feeling sad after being---or even after simply feeling or thinking you were--ignored is perfectly normal for the situation. I am so sorry this happened to you. Really sorry, love.

Tell us what you need. Specifically. Would you like to pm? Do you need reminders of how wonderful you really are? (You really are!) Do you want to play an online game? Do you need to go away and give yourself some more intensive self-care (bath, good food, sleep)? Do you need to "complain" in more detail about what happened? Do you need something not mentioned here?

Someone recently sent me "hugs and popcorn." I am now sending those things to you!