I don't think it fits her in the photo :/ I think it's too narrow. Can't comment on whether it's bridging or not but it just seems perched on top.
When you're fitting an English saddle, you look at gullet size (the Wintec/Bates gullet measurer is brilliant, if you know how to use it properly, or otherwise you can use coat hanger wire bent to fit your horse's shape and compare gullet plates or actual saddles to that) and the actual shape of the saddle vs the shape of the horse. Is the tree straight or banana-shaped? Is your horse's back the right shape for the tree? You can measure your horse's back shape with the same coat hanger wire described above, just shape it to the area where the saddle goes, under where the panel sits NOT over the wither, and check that against the panels of the saddle. And one more question - does it have enough spine/wither clearance for your horse? My horse hasn't got a particularly wide spine but he needs a wide channel as his back is longish and has a lot more flex and play in it, so when he's flexed on a turn a narrower channel will mean there is weight on his spine. It shouldn't be.
Wintec saddles are great saddles for the price. The latest models are very very nice and will honestly stand up to a decent leather saddle for fit and position. The quality of build is great, the plastic isn't slippery, and the very latest models have special balance shims that mean you can just about fit it yourself if you know what you're doing.
My new Wintec CC saddle has THE widest channel I've seen on a saddle in my life, which is great because my horse can bend and flex correctly without the saddle putting weight on his spine.
Absolutely recommend a Wintec.
I also have a cheaper made saddle, it has a name and a brand but the quality is, shall we say, lacking. Foam padding, lucky it fits my horse pretty well but it puts me in a crap position and I hate it.. hence I upgraded to a Wintec CC.