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It sounds a bit like the letter writer is trying to make relationships a substitute for her parents. Sorry - they are gone. Gone for good, and no one can, and no one should replace them.
Someday you will find someone you love and who loves you back - and this will take time, lots of dating, meeting and talking to many people, to find your match. And that person will not fill the gap your parents filled. They will be better, but in an entirely different way - you should not look for your parents in a relationship. Your relationships - they are a support, a teammate - an equal.
Everyone loses their parents someday - sadly you've lost them before you should have. But when you say people don't acknowledge you, that there's no groups - obviously you are letting self-pity limit you. There's plenty of acknowledgement, many groups. Recognize when your brain is playing this trick, trying to limit your actions, so you can stop it from doing so in the future.