the policies and ticketing options for the NY MTA Metro North Train service may have changed. However, historically, a "Family Ticket" was intended for families traveling together with multiple members, such as parents and their children.
If you are a single mother with one child, the Family Ticket might not be the appropriate option for your situation, as it was designed for larger groups or families traveling together.
For individuals or single parents traveling with one child, standard tickets or passes were typically available, and you could purchase tickets suitable for your specific needs.
To get the most accurate and up-to-date information regarding ticketing options, fares, and policies for the NY MTA Metro North Train service, I recommend visiting their official website or contacting their customer service directly. Policies can change over time, so it's always best to refer to the latest information from the official source.