If Muffy won't marry you there must be a requirement you haven't completed. Here are the all requirements needed to get married:
Have a Red Heart with the girl
See all four of her Heart Events
Upgrade your house twice
Buy the Big Bed
Find at least 60 Harvest Sprites
Buy the Blue Feather
Make sure you complete all of those before you propose again.
Muffy won't ever die.
The only person who ever dies in Harvest Moon DS is Nina.
10 days after she excepts the feather. UNLESS THAT IS A HOLIDAY then it will be the day after that.
Her Birthday is Summer 5th.
Yes, you can marry Muffy on harvest moon ds, but it takes a while, i would suggest looking for websites like Fogu.com that tell you all aout harvest moon.
Muffy marries Griffin, the owner of the Blue Bar, if you don't marry him yourself.
In Harvest Moon: A Wonderful Life Muffy does not have a birthday. Nobody does. In Harvest Moon DS Muffy's Birthday is Summer 5th.
Muffy is a very cheerful and happy girl in harvest moon DS. She Lives in the bue bar with Griffin. If you want to marry muffy, Make her apple pie or give her anything from carter's dig (The girly things, not gold and silver. She HATES Them). Muffy is really ncie and cheerful, be careful, Griffin likes muffy too!
I think it is easiest to marry Muffy because she likes jewelry and wine. It is easy to get her gifts.
summer the 5th
Celia, Flora, Lumina, Muffy, and NamiAll have the same level of difficult to marry.
Your son will Have Blond Hair, and a white suit with some blue.
Small fish.
you can have children on harvest moon ds. If you marry mineral town girls the game ends, but in forget-me-not valley, marry: Celia; Muffy;Lumina;Nami; or Flora, you can go to this website and see: http://www.fogu.com/hm6/chan3/index.php
Muffy does not have a dairy in Harvest Moon DS. The diary is used in the game Harvest Moon: A Wonderful Life to see how much a girl likes you. In Harvest Moon DS, which uses the same characters you tell how much a girl likes you by the color of the heart you see when you speak with the girl.
Take wine to her every day, It improves her affection for you by 500. And talk to her twice a day.