The singer and dancer was given the role after winning last year's BBC reality talent competition Over The Rainbow.
Of the possibility that some may not enjoy her performance, Hope told The Observer: "Yes, of course. It's like Marmite: you love it or you hate it. Everyone's got a different opinion.
"I wouldn't take it to heart because they're not criticising Danielle Hope, the person. They're criticising Danielle Hope, the actress.
"I want to be good, I don't want to let anyone down. It's self-pressure more than anything. I just want to be my best."
She continued to explain the challenges of the role, saying of the four dogs playing sidekick Toto: "I'm 18, I'm a leading lady, a singer and a dog trainer. I mean, who'd have thought it?
"You have to teach a dog set ways to do things and then repeat it over and over again. It's so hard because a dog knows if your emotion is real... Your acting has to be so truthful to the dog.
"And they're heavy too. I've been free-weight training with bags of sugar in pillowcases. They each weigh about 8kg but one of them weighs 10kg."