Hi all. I have 2 x-breed small dogs, 1 male 1 female. The female is a terrier type, very nervous. She hates the cold and rain & refuses to wee or poo outside of a night in winter. She just sits cowering until she's let back in, waits til I've gone to bed then does her business on the kitchen floor. Male dog then 'marks' wherever she's been. Every morning it's a mess. Any advice please? Tia