Why does Eleanor choose to take the bus to school instead of getting a ride with Richie?

Richie apparently offers to give Eleanor a ride to school each morning. Sabrina has told Eleanor about the offer, saying the school is on Richie's way to work, but Eleanor doesn't intend to accept the offer. Eleanor doesn't like Richie and she's afraid of him, but this may be the first indication that Eleanor thinks Richie is capable of sexually molesting her.