Should I feel bad she hasn't introduced me yet

Early relationships have different rhythms. Some people introduce partners fast. Others wait until things feel stable. There's no universal timeline that means she's serious about you.

What actually tells you something is whether you've had a conversation about where this is going. Has she said she wants something real with you. Have you two talked about what serious looks like. If you're in the early phase and haven't had that talk yet, her not introducing you doesn't mean much. If you've already said you both want something real and she's still acting like you don't exist to the people who matter to her after a few months, that's different. The gap between her actions and what she's told you is what you're reading.

A good move here is to tell her you'd like to meet her people and understand when that might happen. Not in a desperate way. In a straightforward way. This does two things: it shows you're thinking about the future, and it forces her to give you a real answer instead of letting things drift.

If she responds with a timeline and reasons, you've got information. If she gets defensive or vague, that's also information. Your reply should land somewhere between bringing it up naturally and making it clear this matters to you. You're not angry. You're just saying what you want and asking where she stands on it.

Send your message and give her a few days to respond. Don't follow up immediately or let it spiral in your head. When she does respond, listen to what she actually says. If she gives you a clear answer and a rough timeline, that's something you can work with. If she avoids the question or says 'eventually' for the third time, you've got your signal.

If she doesn't respond at all after a week, that's a signal too. At that point you know where you stand. One conversation about this is fair. Asking three times is not. If she dodges it twice, stop asking and decide whether you're okay staying where things are or whether you need to move on.