She will most likely keeps her head covered even while in her home. The religion ask for covering a woman's hair while in company of non-muhrim (in this case, your husband whom she could marry if she and him were singles). I am not sure...
Have you looked into Coccoro car seats? I think Radians and Coccoro car seats are the ones that you can put three in the back seats.
Combi Coccoro - http://www.combi-intl.com/Products/Item.aspx?Item=12
I have always wanted raised beds!
I agree with PP. How wrapping chicken wire around the bed? 2-3 foot tall fence should prevent the rabbits from coming in, and low enough for you to be able to harvest or weed easily.