She wouldn't have predicted the ramifications of these two encounters, or how they might have affected her speedy downfall over the next few weeks (which would really begin the following day).
At this point in her marriage to Henry VIII, Anne was likely aware of the negative attitude of much of the court as it related her and her failure to provide the king with his sought-after male heir. Over the (almost) three years of her queenship, she had made more than a few enemies - not least of whom was Thomas Cromwell, one of the king's most esteemed advisors, and one of the most powerful men in England. But just how much danger did she think she was in of losing her status? The idea that the king might be tiring of her and looking for a divorce - something that she was familiar enough with, having partially facilitated his annulment from his previous queen - might have been plaguing her mind. But could she have predicted the actual events that would follow? I'm assuming not.
Let's start first with Mark Smeaton - a groom of Henry VIII's privy chamber, as well as a popular court musician. Records suggest that he was likely young and of quite low status. He was known intimately as "Mark", rather than "Smeaton", and apparently enjoyed favor from both the king and queen. Apparently, on 29 April, Mark was seen standing at a window in Anne's presence chamber. Noticing how sullen and dour he appeared, the queen asked why he was so sad. Mark reportedly replied, "It is no matter." This evidently irritated Anne, who quickly put him in his place. She said, "You may not look to have me speak to you as I should do to a noble man, because ye be an inferior person." Chastised, Mark replied, "No, no, a look sufficeth me; and thus fare you well."
Now, on the surface, this conversation doesn't appear damning at all. In fact, it indicates the opposite of favor by Anne to Mark - she's telling him that he shouldn't expect her to ask after his feelings, or care about him in such a way as she might for a man of higher status. Mark does nothing wrong here either; he simply says that one look from her suffices, indicating that he is honored by her attention and expects nothing more. So why does this matter?
According to one 18th-century historian, John Strype, this encounter may have contributed to Mark's subsequent betrayal of Anne. The following day, he would be arrested by Cromwell's men - taken to the latter's home, and interrogated (possibly tortured, though we can't be sure). At this point, Mark would famously "confess" to having slept with the queen on three occasions. Why would he have confessed to such a thing if it weren't true? Possibly to avenge a queen who had harshly rebuked him the day prior.
We can't know his motivations for confessing to an affair with Anne, but it is certainly possible that this encounter on 29 April might have contributed to it. Mark, feeling embarrassed and hurt by Anne, might have expected that such a confession would only have ramifications for her, and not him. (How wrong he would have been!)
Henry Norris was the king's Groom of the Stool, meaning he had the most intimate, private access to Henry VIII, as well as being one of his closest friends. He had also been close with Anne for the past few years - sharing her reformed faith, courting her cousin, and likely making several visits to her chambers (along with other men) in very expected, respectable ways. They were friends, and until this day, no one would have (probably) had any cause to think there was more going on between them.
However, on 29 April, Anne confronted Norris and asked why it was taking him so long to marry her cousin, whom he had been courting for some time. We don't know his exact answer, but whatever he said (we can maybe assume it was some light flirtation or flattery towards the queen), Anne's response was: "You look for dead men's shoes; for if aught were to come to the king but good, you would look to have me."
This did not look good for her. The first part of her statement indicated that Norris was putting off his own marriage because he wished he could have her instead. While this wasn't necessarily completely damning, it did illustrate a possibly-too-intimate teasing and flirtatious relationship between the two of them, which would surely have been noted by anyone who overheard them. But the second part of the statement was worse, because she mentioned the king's death. Although she wasn't exactly predicting or hoping for it, the mention of "aught happening to the king" was more than enough for heads to roll. And Norris knew it. Blanching with the realization of the queen's dangerous words, he reportedly replied passionately that "if [he should have such a thought], he would his head were off." (How true these words would prove to be in just a few weeks' time.)
Anne did notice the error in her statement at this point, and she ushered Norris off to see her almoner, in order to swear to her good character. She must have feared - even if only a little - that her words would have been heard and possibly twisted against her by her enemies