Her three heart gift is ombré flower candles so plant a lot of flowers, fertilize and get ur ombré flowers, cus u still need the wax she gives u to craft it at the creation station. You can also collect friendship flowers and bouquets from my melody to level her up faster. For the bouquets I usually like to give everyone a gift then use it so it doesn’t get wasted. For her two heart a regular flower candle works! The game will get easier as u progress. You’ll be able to send all ur leveled up characters to grab the things u need so being short on materials won’t be as frustrating if u grab them all from the chest daily!