Ok so the grass hammock could be the cause of the injury -- she more than likely snagged a nail and pulled - very common w/ these hammocks - if you want to stay w / a hammock please get a fleece or cloth one -
www.etsy.com search bearded dragons - or
Pampered Beardies
the T 8 needs a hood / fixture --- I would however upgrade to a T 5 here is a link for you so you can either order or look - for a 40 + gallon tank a 24"
Zoo Med ReptiSun T5 HO Hood this comes w/ a 5.0 bulb its like what your using now but you want a 10.0 T 5
22"
Zoo Med ReptiSun 10.0 UVB T5 HO
or look at your Pet Smart if you have one for this
24 watt
Arcadia ProT5 12% UVB Bulb With Hood you want the 12% bulb
if you get the T 5 it can sit on top of the screen BUT the screen will determine that -- I can help you place it when and if you replace it - the T 8 your using needs to be directly over the basking decor piece 6-8 inches w NO screen and should be replaced in approx 6 months I recommend 5 from date of install