Sorry to not be more supportive, Mel, but, if your daughter has not previously been left home alone like this, then a person could consider this to be reckless behaviour on your part. It seems to me that your situation calls for more communication, not less. An evening ride may be fine, leaving your daughter at home in cell phone contact may also be fine, but if it isn't discussed with your husband, her father, before the fact, I can see this to be cause for some problems.

Do your best to put yourself in his shoes and try to figure out what would work for you to feel more comfortable in the situation. See if you can work with him towards that.

Peaceful supportive butterflies headed your way,
Hugs,
~T~