Girlfriend hangs out with “baby daddys” family and is close with them, we plan to marry, should I be concerned?

kind of gives me the 2 mother in laws etc feeling, am I tripping? She sees his family as family. Takes care of his sisters baby sometimes, cooks food for his mother and takes care of her if needed more than the mothers own kids and around them for birthdays and holidays. My only concern is, is there enough room for my family, the actual real in laws and should I be concerned about this strange dynamic?

Girlfriend hangs out with “baby daddys” family and is close with them, we plan to marry, should I be concerned?
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