In a quaint coastal town, there lived a painter named Oluwatoyin, a baker named Eirwen, and a florist named Satish. One sunny morning, Oluwatoyin was commissioned to paint a large mural on the side of the town's library. Eirwen, who was good friends with Oluwatoyin, knew about this commission and was planning to surprise her with a basket of freshly baked pastries as a congratulatory gift. On the same day, Satish was preparing a special order of flowers intended for the library to celebrate the new mural, however, Satish was unaware of who the artist was.

As Eirwen was walking towards the library with the basket of pastries, she bumped into Satish. During their conversation, Satish mentioned her flower delivery for the mural but expressed her curiosity about the artist's identity. Eirwen, while maintaining the surprise for Oluwatoyin, didn't reveal the artist's name but shared her plans to surprise the unknown artist with pastries. Later that day, Satish saw Oluwatoyin working on the mural but had no interaction with her, and there was no indication that Oluwatoyin had noticed Satish either.

The following day, Satish met Oluwatoyin in the town market and they struck up a conversation. During their interaction, Oluwatoyin mentioned how she received a wonderful but anonymous surprise of pastries the previous day while painting.

Given this situation:
- Does Satish know who the artist of the mural is?
- Does Satish know who surprised the artist with pastries?
- What can Satish infer about the relationship between Eirwen and Oluwatoyin based on the information known to her? Respond briefly.
Considering the progression of events, it is evident that Satish is aware of Oluwatoyin's role as the artist of the mural. Initially, Satish had a conversation with Eirwen about the delivery of her flower order for the mural without knowing the identity of the mural's artist. Satish's subsequent sighting of Oluwatoyin working on the mural would logically allow her to put the pieces together and deduce that Oluwatoyin is the artist, despite them having no direct interaction at that time.

Regarding the second question, Satish does not explicitly know who surprised the artist with pastries. She heard from Eirwen that somebody planned to surprise the artist, and given Eirwen's refusal to disclose the name, it might appear discreet or merely a coincidence to Satish. Although Eirwen is the only link Satish has to the pastry surprise, there is no direct evidence for Satish to conclusively know it was Eirwen who left the pastries unless Satish makes a guess or further investigations reveal it was indeed Eirwen. The fact that Eirwen held information about the artist without revealing it could suggest to Satish that Eirwen might be more likely to be the person behind the surprise, yet this is still not certain knowledge for Satish.

Finally, what Satish can infer about the relationship between Eirwen and Oluwatoyin is limited but suggestive. Satish is aware that Eirwen knew about the mural before it was commonly known, and that Eirwen planned to surprise the artist with pastries. While these facts don't confirm a close relationship, they do suggest that Eirwen has a level of familiarity and interest in the mural's artist. Knowing about someone's work in advance and planning a surprise indicates a level of care and a positive association. Therefore, Satish could infer that there is at least a friendly acquaintance or a degree of mutual regard between Eirwen and Oluwatoyin, but without additional information, she cannot determine the depth of their relationship.