Hey BB, I saw some variations in the conversions I looked at, I think the important thing is she not get sick or have any ill effects. At that mimial level of Klonopin she in th right ballpark, 15-20 mgs of valium should replace the "Benzo" quality, whether you get the exact same effect I'm sure is very individual.
When you hurt so bad you can't catch your breath, Benzos comes in handy in just about any form. It's strange, but I had profound depressive type feeling from valium and no problem at all with other benzo's. I was also having terrible spasm which could cause those feelings.
Hands down valium is a better muscle relaxer, where a shorter acting benzo like Temazapam is better for sleep.
Unfortunately most docs consider it sloppy to prescribe multiple benzos even when it makes rational sense in many cases. It's OK with many ther classes of drugs like BP meds, AntiB's AntiD's but the stigma atached is strong like with opiates. My mom was a nurse and in the early 60's they kept a bottle of Valium right next to the aspirin and coffee in the nurses lounge. How things change.
Take care, Dave