Ok I don't like Lucina (FE:A), but you gotta respect the girl when you read her support dialogue with her mother. Her dialogue with Chrom was just corny ("There there, daddy's right here." ... WHAT THE DEUCE?!), but the A-support with her mom was a bit touching.
They go out shopping for dresses, even though everything Lucina picks out is a horrid fashion fax-pas. When Lucina sees her mother looking at baby clothes, she realizes she doesn't belong in that time and shouldn't push herself onto her parents anymore. She buys her mother the baby clothes they were looking at and tells her mom she won't be jealous of her infant self any longer.