I looked up online, and Barcelon BCN to Paris CDG is a 2 hour flight, for a total of 71.00 euros for 2 ppl with vueling. The airport in Barcelona is located only 20 minutes from the hotel, so no problem with getting to the airport.
The Paris hotel is located about 40 minutes from the airport. When we arrive in Paris I will be relaxed, and ready for the sightseeing in a new city, so really I don't wish to lose any sightseeing time by taking a train, especially since my mom & I are only going to be staying in Paris for 2 nights. After that we will be off to the final destination of our 3 week trip...Dublin for 2 nights before flying back home to the states.