I think there might be an autocorrect error in your post. Did you mean the relaxation/meditation has worked? I assume you meant it hasn't?

How did you do the meditations? Talk us through them.

It sounds like you need something to distract her kind from her own thoughts to give her time to settle.

At her age you might also be able to try a reward chart which focuses on lying down quietly in bed (rather than going to sleep - which could increase her stress as he tries too hard to get to sleep) at firsy you could have a reward or sorts at the end of the week - Which might be watching tv for half an hour after school or something if that's a special treat