Update :

I removed her from substrate and put her in warm water during 3 days.
She made her poop (The mice she ate some days before).
Then, I changed the substrate and clean the tank.
I put her in the tank and she stayed outside during one day.

I said "Yeahh, she' awake now".

I decided to feed her. She ate one dubia roach, and then, 2 minutes after, went back under substrate again.
Now she is under since 3 days (With closed eyes).

I am now sure she wants to stay under the substrate for weeks or months for a rest period.

I wouldn't like to disturb her anymore until she comes out again, but....She has one dubia in stomach.

Should I disturb her again (Only for one dubia !) so that she makes a little "Dubia poop" or should I let her quiet, considering that one dubia in stomach during several months is not dangerous ?

Thank you.