Please help me surprise my wife

I'm surprising my wife with a puppy to help lift her spirits after the death of her mother. I'm presenting the pup with a sign around her neck that reads "I am yours. You are mine." Could someone help with a translation into Spanish (shortest possible so that it fits on small sign). Thank you very much for your help

Soy tuyo (I am yours)
Eres mia (You are mine)

Good luck!

Thanks Vicente,

I failed to mention that the puppy is a female and the sign is meant to be her first "words" to my wife. Does this change the masculine/feminine characteristics of your translation? Soy tuya? etc.
Thanks for your help.

Hello, PinkandBrown!

If it's female, it should be: "Soy tuya, Eres mía".

Thank you!!!