Yeah I think you can
I would say probably, as long as she doesn't make any noise. You would have to check with the theater staff, but therapy dogs are allowed most places. If she is scared by Lou's noises that might be a problem, but if she is well behaved you should be fine.
Depends on which building you go in. The theatre would be iffy to bring a dog into, unless it is a service dog. But everywhere else should be fine
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