Final answer:
Whether or not Alex and Ariane are successful in obtaining power of attorney over their mum's money depends on several factors, including their mum's consent or approval.
Step-by-step explanation:
When Alex and Ariane try to get power of attorney over their mum's money, whether or not they are successful depends on several factors.
Power of attorney is a legal document that allows someone to make financial and legal decisions on behalf of another person. In order to obtain power of attorney, they would need their mum's consent or approval. If their mum is mentally competent, she can choose to grant them power of attorney and they would be successful. However, if their mum is mentally incapacitated or does not want to grant them power of attorney, they would not be successful.
It's important to note that laws regarding power of attorney can vary depending on the jurisdiction. The specific circumstances and laws of the relevant jurisdiction would determine the outcome of Alex and Ariane's attempt to get power of attorney over their mum's money.