If you can get it heated fine and she'll eat consistently for you - then use that. If not - look for a 41 quart tub like this one at Walmart - it's the Sterilite 1986 model:


Juvie:




Same tub for an adult:


Joanna (Frankykeno) is also in Toledo and has some big females, I'm sure she'd be happy to help you out where she gets her tubs from. She's in the process of moving right now, but should be back online on Saturday.