Yes, I think it's a great sign that your mom is asking questions, and that your mom and dad are watching Jack Van Impe. And you gave a great answer to your mom. It proves that she is searching, and that's always good. Praying that the seeds you are sowing will bring in a harvest soon!
And Patti is right, you are a good daughter! So many of your posts center around asking for salvation for your mom, and the things she says and asks about Jesus.
I'm praying for salvation for both your mom and dad.