Welcome.  Chelsey sounds sweet and your lab sounds like a great doggie sibling...I'd love to see a pic of them together if you have one.
 
As for others holding her....I think it is common for dogs to not want "strangers" to hold them.  And, to be honest, I don't know if I'd want just anyone holding my Sophia.  I read on another thread that a member has a rule that only she and her husband can hold their yorkie.  I am adopting that same policy.  These pups are just too precious to risk someone dropping them.   
I'm sure (if she's like most Yorkies!!) she will be a friendly and fiesty dog as she grows older.  Yorkies seem to think that they are super brave and aren't afraid of much! 
Post some pics if you can!! 
