She will eventually grow out of it- my daughter did it too in the evening- we called it "cranky-o'clock". Like clock work she would cry. Years on I put it down to me being tired, trying to get dinner on, trying to get everything done (I was working) and she just cotoned on to it.

I also had the same problem as you being isolated- it is frustrating and tiring being alone. My solution was simple- when husband was around (he travelled alot) I would go off and spend a night in a hotel! It was a battery recharger- of course I called them to see how it was going, and felt a bit guilty; but it was the only way for me to make it.

She is now, 12 and there is no more "cranky-o'clock", its now "all day-ya-never-know-when-pre-teen-crankyness-is gonna-hit-ya".

Be reassured, she wont cry forever, it will mutate into someother behaviour!