Is it just a regular household bulb or is it a flood lamp? I tried a flood lamp in my beardies tank one time and she HATED it. I think the light was just too concentrated for her. If yours is a flood lamp or spot light you might try a regular household bulb..
I just recently got done switching my basking lamps around to improve temps and i have found its best if in the basking spot your lizard has several different basking temps to bask in. For example, in the hottest part of my beardies basking spot it is 120degrees, but she has several differnt "ledges" to choose from that range anywhere from 100degrees. Making it so they can choose their optimum temperature is great for your lizard and makes them much more comfortable.
Also, how hot is the cool side of your tank now that you put a higher bulb in. Maybe the tank is too hot overall and your beardie is just trying to beat the heat?
And also, it could just be that she is getting uised to the change in light intensity!
Good luck!
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0.1 Bearded dragon
0.1 mexican kingsnake
1.0.2 Leopard Gecko's
0.0.1 Rose Hair Tarantula
1.0 BTS
0.0.1 Reverse Okeetee Corn
0.1 Bullmastiff
4.1 Cats