It can be hard going to a meeting like that and feeling like no one notices you (been there, done that). I'm sorry the guild isn't more aware of new members. You'd think that when you paid for one night they might have asked if you were new and then taught you the ropes, so to speak. Did the other members have name tags? If so, make one for yourself and wear it to the next meeting. Do they give new attendees a chance to introduce themselves? It's hard to do, but stand up and give your name. Does the guild have a Web site? See if you can find out who is responsible for Membership or Hospitality or something on that order. Contact them and tell them you're new and ask if they have a reception or pre-meeting for new members. If not, can they give you any hints for finding your way around (for instance, in our guild, we have a "give-away" table, a library where you can check out books, a fat quarter of the month, a block of the month, etc.).
Please give it another try, and instead of waiting for someone to come up to you, keep telling yourself how lucky those ladies are that you decided to join their group. I'll bet there's at least one other person sitting by him/herself. Ask if you can have the chair next to them, sit, and start up a conversation. I'll be she'll be glad you did!