Sending sms/iMsg to someone with iPad and non-iPhone via Siri

Hi there,

We hit a glitch with sending text messages via Siri.

I have an iPad and an Android phone. Using iMessage between my iPad and her iPhone works fine. She can also send a text to my phone with no trouble by making sure she selects the "SMS" thread in iMessage (which is a whole other annoyance...).

The problem is when she asks Siri to send me a text message, it defaults to sending an iMessage to my iPad, and therefore nothing goes to my phone. That kind of ruins what would be a very frequently used feature. Any ideas on how to get it to default to the phone number and not apple ID?

Thanks!

-Sean