She seldom flips over, and at night is usually 26, afternoon is about 30-34.Well she's not trying to get away from other torts because you only have her.
She's probably not gravid because she laid 3 eggs, although there could be another.
So you need to make sure she has plenty of dense foliage to hide in. She may be feeling insecure.
Also, because she is wild caught she isn't used to barriers and is used to freedom.
Get plenty of cover for her. Even if you make some hides out of sticks and cover with some of that fern you showed us. Pile up a load of dried leaves. Anything that is natural cover.
What are the temperatures outside?