My mom wants to visit me in France. It is her first time in France and she does not know how to go from Paris Airpot CDG to Gare Montparnasse or to Bercy-Seine, where all the busses to Angers are. I want to calm her down by explaining her the best way to go there. Can you please help me?
The most direct route by train would be RER B from CDG to Paris getting off at Denfert-Rochereau station, then transferring (using same RER ticket) to Metro 6 direction Etoile (often listed as Charles de Gaulle-Etoile / Arc de Triomphe) until Montparnasse-Bienvenue station. From there it's a short walk to Gare Montparnasse where she can find her bus to Angers.