Mother In Law

Hey ladies me and my mother in law does not have a relationship at all...my husband and his mom are extremely close so it's surprising to me that for her sons sake she hasn't reached out to me since we've gotten married to say the least "hey welcome to the family " but idk maybe I'm just being a weirdo ..I don't think I should have to reach out to her first..like what am I suppose to say ...hi I'm your sons wife can I be apart of this family ?? I'm so confused at this point because my first mother in law was very stand off ish to also...but I'm a really sweet girl and very respectful I don't get it 😞