Does anyone know of a solution that allows a business user to generate a statement and have it emailed to a different email address that is not the configured email address on the customer record and also have the FROM field be from a different subsidiary email?

Yes, this is possible, but it typically requires some customization since NetSuite uses the customer record and subsidiary defaults. A SuiteScript or a customized statement-sending workflow can send the statement to an alternate email address and use the appropriate subsidiary sender. If you can share your current setup, I'd be happy to point you toward the best approach. @Eric B

Thanks for the feedback. I was going in the direction of customization but wanted to find out if there was a more "native" way to come up with a solution.

We built a something for our internal use as well. Have a few things prior but end up with a suitelet/mr combo to generate and send out the statements.

You probably don't need MR. A button on the customer can do it and send it in real-time.

Make a workflow based on the customer record In the send email action click the include statement box Choose the sender and recipient and setup your template