The film begins with a questionable opening number, "Heidi," that feels unnecessary, yet beyond that initial stumble, it proves to be an acceptable movie for families. Staying true to Johanna Spyri’s novel, “Heidi” resides in the mountains alongside her grandfather, who is generally good-natured but often irritable, and close to her friend, the goatherd "Peter." An incident involving lynxes attempting to raid a chick…