Hey there perfectreign,
Thanks for asking the Apple Support Communities about issue with Siri.
She asked the app to use, and depending if you were connected to the car or not, there is no app called "Text". Try again by answering with Messages.
Sometimes unexpected behavior can be resolved with a restart: Restart your iPhone
You also want to update if you have a compatible iPhone model. The latest version is iOS 16.5. You can verify this within Settings > General > About. In case you needed it, this link shows how to first back up, then update: Update your iPhone or iPad
If updating and providing the correct app name does not help, please let us know, when did this start to occur?
Has this occurred more than this one time?
Has this occurred with more than just your mom and that contact card?
Is it connected to the car? Also how is it connected? Are you using CarPlay, or a cable, or some other option like Ford SYNC?
What is the car year, make and model?
Is it occurring only while connected to the car?
Cheers!