We are looking after a friends dog for a while- we brought her home tonight. As we have cats, we have put her in a spare room with her own rug, some water, food and anything else I can think of that she needs, but she's been whining for 30 minutes now. I don't want to let her out, because I want to manage her meeting with the cats tomorrow- but the crying is so sad. Anything I can do? Or is it a ear plug job?