Molly Pitcher was a woman who showed great courage during the American Revolutionary War. She is often remembered for taking over her husband's cannon-firing duties at a crucial battle.
Yes, there are many Sherlock Molly pregnant fanfictions. Writers like to create this scenario to see how the characters, especially Sherlock, will react to such a life - changing event. It can also be a way to explore Molly's character more deeply, as she navigates motherhood and her relationship with Sherlock.
One common theme could be loyalty. Given the nature of Daryl Dixon's character in the original show, loyalty to friends or comrades like Gene Dixon and within the context of Trinity might be a big part of the fan fictions.
Molly Bloom is the central figure in this true story. Without more context, we can assume she is an individual with a story worth telling, perhaps someone who overcame difficulties or had a remarkable life.
Daryl Dixon isn't gay in the comics. The storylines mainly revolve around his adventures and struggles in a post-apocalyptic world, not his sexual orientation.
It depends on their popularity and the creativity of fans. If people are really into their characters and potential relationship, fanfiction could definitely exist.