I like to think she is merely sighing in unrequited passion for the scruffy Paul. She doesn't realize she could do so much better. XD

Yeah, la signora Martini is a bit on the mannish side, and I think she's married (I don't know if women of a certain age get called 'signora' if they're unmarried or not). I think poor Mark may have Issues with women, especially young vivacious ones like Dina, and prefers the company of Women in Comfortable Shoes, heterosexual or not.