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The film is "Return to Halloweentown", the fourth installment in the Halloweentown series.

There is two World in the series Mortal World and Halloweentown.

From your Question

she is forced to use it otherwise some dog which I think was her brother transformed by three asian witches (I think), would die.

In The Film

the Sinister Sisters(witches) transform Dylan(her brother) into a dog to compel Marnie(she) to comply with their demands.

see this wiki

The film is "Return to Halloweentown" released in 2006, the fourth installment in the Halloweentown series.

There is two World in the series Mortal World and Halloweentown.

From your Question

she is forced to use it otherwise some dog which I think was her brother transformed by three asian witches (I think), would die.

In The Film

the Sinister Sisters(witches) transform Dylan(her brother) into a dog to compel Marnie(she) to comply with their demands.

see this wiki

The film is "Return to Halloweentown", the fourth installment in the Halloweentown series.

There is two World in the series Mortal World and Halloweentown.

From your Question

she is forced to use it otherwise some dog which I think was her brother transformed by three asian witches (I think), would die.

In The Film

the Sinister Sisters transform Dylan into a dog to compel Marnie to comply with their demands.

see this wiki

The film is "Return to Halloweentown", the fourth installment in the Halloweentown series.

There is two World in the series Mortal World and Halloweentown.

From your Question

she is forced to use it otherwise some dog which I think was her brother transformed by three asian witches (I think), would die.

In The Film

the Sinister Sisters(witches) transform Dylan(her brother) into a dog to compel Marnie(she) to comply with their demands.

see this wiki

The film might be "Return to Halloweentown", the fourth installment in the Halloweentown series.

There is two World in the series Mortal World and Halloweentown.

see this wiki

The film is "Return to Halloweentown", the fourth installment in the Halloweentown series.

There is two World in the series Mortal World and Halloweentown.

From your Question

she is forced to use it otherwise some dog which I think was her brother transformed by three asian witches (I think), would die.

In The Film

the Sinister Sisters transform Dylan into a dog to compel Marnie to comply with their demands.

see this wiki