Looking For Young Adult Female Cairn

We are looking for a female cairn in Central Georgia. She may be spayed (she will be by us if she is not) . We rescued Felix (neutered) three years ago and LOVE him!!!!
We are an experienced cairn home. We require a female because Felix wears out his bellyband with another male in the house. An active girl would be ideal, we love to go camping and boating--where the family goes-- the family dogs go!! We do have children the youngest is 6 and he is very dog savvy. I am a stay at home mom and have the time to devote to shall we say some behavior "challenges"
We are registering with Col. Potter and Cairn Terrier Rescue USA. But found most dogs are across the US, and the ones nearby are males. We would consider two but PLEASE just females.