Fallenfeather: talk to her a bunch of times. If you are a tom or a non-binary cat it will say, "ask to be mate?" say, yes. and it'll take a while but she'll become your mate eventually.
Cottonwillow: play her "guess the number" game three times and guess them correctly before you run out of guesses. on the fourth time, say, no when she asks if you want to play and she'll offer to go to the shore and well, you know what happens next.
Hope that helps :]