Yes 10 mg Valium would be good, probably even better than 0.5 mg Xanax. 10 mg Valium is about equal to 0.5 mg Xanax, but that is just according to certain charts. It is often reported as being more sedating, euphoric, and muscle relaxing than Xanax. Also, Valium's active metabolites have long half-lives, so it could build up in your system and help you out during the day some, too that is if you only took it at night. But the noticable effects would most likely only last a few hours. I would definitely get Valium if you could. That would help.