Mrs Weasley uses her words to comfort Harry. She might say things like 'You're a good boy, Harry' or 'You've been through so much, but you're so strong'. Her kind words are like a balm to Harry's troubled heart. She may also share her own experiences of facing difficulties to make Harry feel that he's not the only one and that he can get through tough times too. This long - term emotional support is a key way she shows her care for him.
There's also a chance that she'll be hurt. Mrs. Weasley has a big heart and Harry ignoring her could really wound her. She might then become more withdrawn herself, focusing on taking care of her own family and leaving Harry to his own devices, while still secretly hoping he'll come around.
Mrs. Weasley could get a bit angry too. She has a temper, and if she feels that Harry is being disrespectful by ignoring her, she might scold him a bit. However, her anger would come from a place of love and concern. She just wants Harry to be okay and part of the family, and his ignoring her goes against that.
One scenario could be that Harry has a nightmare about Voldemort. Mrs Weasley finds him trembling and she sits by his side, wraps him in a warm quilt and tells him that he is safe now, that he's part of their family and they will protect him no matter what. She might make him a warm cup of cocoa as well.
Perhaps Harry is feeling a sense of guilt or shame. Maybe he's made a mistake that he doesn't want Mrs. Weasley to find out about, like using a dark spell in a moment of desperation during a battle. So, to avoid her motherly scrutiny, he starts to ignore her. He might be afraid that if she gets too close, she'll figure out what he's done and be disappointed in him.
One possible reason could be that Harry is preoccupied with his own dark thoughts or problems. Maybe he's worried about Voldemort and his plans, and in his distracted state, he unconsciously ignores Mrs. Weasley's attempts to reach out. Another reason might be that he's trying to be independent. After years of being in the wizarding world on his own terms, he might not want to be mothered too much by Mrs. Weasley.
I'm not sure if there are specifically popular ones. Fanfiction popularity can be very subjective. What one person likes, another may not. It really depends on the individual's taste for this rather unorthodox pairing within the Harry Potter universe.
Hermione could be very hurt. She respects Mrs Weasley a great deal, and to receive such an angry message from her would be a big blow. So she might cry and isolate herself for a while to think about what she did wrong and how to make it right.
One possible fanfiction could be set during a particularly dangerous time at Hogwarts. Harry is feeling extremely vulnerable and Mrs. Weasley, being the motherly figure she is, hugs him tightly when he arrives at the Burrow. This hug is so full of love and warmth that Harry feels like all his fears are melting away. It could be a moment of great emotional connection, showing how Mrs. Weasley has become like a second mother to Harry.
I'm not really into that kind of fanfiction. But you can try searching on some well - known fanfiction websites like Archive of Our Own. They usually have a wide range of fanfictions, and you can use the search function to specifically look for 'Harry and Mrs Weasley' ones. Just be aware that not all of them might be of high quality.
The plot could develop with Mrs Weasley setting some rules for them. For example, she might say they can't be alone together without supervision.