Learning to love to school...

Since finally having a school arena readily available to work Legacy in I find out she pretty much hates being in there and finds watching the clouds go by or the sheep in 2 fields over being herded. Either this would happen or she would jet off into a fast canter/gallop around the school like she was back on a racecourse. 

So after reading the Q & A section about a horse napping in the latest Horse & Rider issue they suggested about loose schooling and showing the school can be a fun place.

Since reading this I've only taken her in the school the once, she wasn't in there for long but she was able to sniff around, eat the grass on the sides of the school and have a roll (collapsing into a roll in the picture) all of these things I don't let her do while in the school. The article suggested letting her do this, making her work a little then giving her a treat for the work, so that's what I did and during that session it was working well. 
Tomorrow hopefully weather depending she will be going in there again, once a week is all I currently have time for at the moment due to not driving which sucks but I'm getting there and will be driving around in my own little car soon, and with spring/summer on their way hopefully I will be able to get some riding sessions in before/after work.

That's all for now, will update on how this is working when I've done it another couple of times.  Have any of you had this problem before? What was your approach and how did you overcome it? The help would be appreciated.