Yeah, that's very annoying when a girl is slow on appreciating and does not know how to acknowledge your efforts - one year is a lot of time... Not for a year, but have had several similar incidents through life.
Sometimes they go so far with "the hard to get" attitude, that with time you either resent the seeming indifference or lose interest. And funny enough, they begin to chase you when it's already too late.
A good lesson for Doris and whoever might read this.