Sister in-law, I want to take off…

Sister in-law, I want to take off those last two words.
You mean more to me than some made up phrase.
You have been a true sister to me all this time,
And I am so proud to call you one of us.
I remember your first time with the family,
And I knew you belonged with us.
Please take this card as sincere appreciation
Of who you’ve become to me.