Muiri

Muiri is a young Breton woman in The Elder Scrolls V: Skyrim. She is one of the contacts for the Dark Brotherhood questline. If the player possesses the Amulet of Mara, and has finished her questline, he or she can marry Muiri. She is an assistant to Bothela at The Hag's Cure in Markarth. When married, she opens a shop, and gives the player 100 gold a day, which will stack if not collected. She cannot become a follower.

Mourning Never Comes
Astrid in the Dark Brotherhood Sanctuary gives this contract to the Dragonborn after finishing Nazir's contracts.

Objectives

 * Find and talk to Muiri at The Hag's Cure shop in Markath. (Also seen at Silver-Blood Inn)
 * Kill Alain Dufont
 * (Optional) Kill Nilsine Shatter-Shield

Walkthrough
Kill her ex-lover Alain Dufont at Raldbthar. There is also the optional objective of killing Muiri's former friend, Nilsine Shatter-Shield, which results in receiving the item Muiri's Ring (Created Potions 15% stronger). Talk to Muiri to collect the reward. Report the results to Astrid. (If you wish to marry Muiri, you must complete both objectives.)

Bugs

 * PC users can fix the dialogue problem by bringing up the console, left-clicking her, and then typing in the command "resetquest DB03", which removes the completion of her Dark Brotherhood quest. If still on the quest line for the Dark Brotherhood, this will bug Astrid and remove the ability to complete the quests she gives.
 * If she continues to thank the player after the above fixes have been attempted, try using the console command "player.setrelationshiprank 000198f8 4". By entering this code she likes the player instantly and the option to marry her will be available.
 * Sometimes after killing both Alain and Nilsine after you acquire the Amulet of Mara Muiri will still greet the Dragonborn with thanks and no option for marraige. If this is the case, drop the amulet which has already been acquired and buy one from Maramal. Afterward you should be able to approach Muiri and receive the option to marry.
 * If Alain was already killed, Muiri will not ask to kill Nilsine, ruining a chance to marry her or collect her ring as a reward.
 * Cant find her anymore she disapeared after i finished her quest