Thanks for the advice guys. I cut and pasted it all to my mom. She laughed at the "active" comment. Apparently her girls are more of the sloth family than the rodent family.

They have a multiple story cage, but apparently they rarely go to the other stories and prefer instead to hang out where their little igloo is. She did say that if she suddenly became active for the first time in her life, she would move her to the travel cage she has.
I haven't heard from her yet since early this morning, but as of early this morning, the girlie still wasn't letting her adjust her so she could inspect the hole, but she said that the paper towels and tshirt material she had in there didn't have much drainage.
I'm wondering if her "thin skin" (I've still never heard of a rat having that "problem") has anything to do with the fact that they are both overweight. I can't convince my mom to ONLY feed them the Harlan I sent and they'll eat it if they are hungry and to cut the fruit treats out for awhile. They will be 2 in another month and I can't get her to understand that they will have a less chance of dropping dead at 2 if she gets their weight down at least some. So frustraiting, especially since I don't live near there.
Now I just get to worry more about them and next weekend when my parents come up here to visit. Do I have them deal with a 13 hour drive both ways and make sure that they are okay or do I have her leave them at home with no one looking in on them all weekend?