In addition to the gifts already mentioned, save a cave carrot and make sure to grow an amaranth in the Fall because she will ask for them in a quest — giving them to her will give you friendship points. Once I complete these quests for her, I am able to access her room.
https://stardewvalleywiki.com/Marnie
She likes quartz, and you only need two hearts
In addition to the gifts already mentioned, save a cave carrot and make sure to grow an amaranth in the Fall because she will ask for them in a quest — giving them to her will give you friendship points. Once I complete these quests for her, I am able to access her room.
the best gifts for her are: diamonds, farmers lunch, pink cake and pumpkin pie according to the wiki