One common theme could be protection. Just like a mother would protect her child, the Erza - like character in the fanfic might protect Naruto from various threats in the Naruto universe.
I'm not sure specifically which 'erza narutos mother figure fanfic' are the best. You could try searching on popular fanfic websites like FanFiction.net or Archive of Our Own. They usually have a wide range of fanfics related to Naruto and might include ones with an Erza - like mother figure.
In some Naruto fanfics, Erza could potentially be written as a mother figure. However, since Erza is from 'Fairy Tail' and Naruto is from 'Naruto', it's a crossover concept. It depends on the creativity of the fanfic writer to blend her character traits in a way that she can be seen as a motherly influence in the Naruto universe.
One way is through her nurturing side. Erza can offer emotional support to Naruto characters who have lost their families or are going through tough times. She could share her own experiences of struggle and growth from 'Fairy Tail' to inspire them. Also, she can cook for them, just like a mother would, providing them with nourishment and a sense of home. In addition, she could be strict when it comes to training and discipline, ensuring the characters grow into strong and responsible individuals.
I'm not aware of the popularity of this specific fanfic. There are so many Naruto fanfics out there that it's hard to say whether this one has gained a large following.
Yes, there might be such fanfictions out there. Fanfiction often explores wild and creative ideas, and making Erza Naruto's mother is one of those unique crossovers. Writers in the fanfiction community like to blend different universes and characters to create new and interesting storylines.
Yes, in some RWBY fanfictions, Salem can be portrayed as a mother figure. Some authors might explore this aspect to add depth to her character or create unique storylines within the RWBY universe.
In many interpretations of 'A Christmas Story', the mother figure is often seen as Mrs. Parker. She plays a caring and nurturing role throughout the story.