You Learn Something New Everyday.

[Weird Harold]

"Thank you for clearing that up guys!" ms.read cheered everyone in the thread. Meanwhile, she was thinking about all the things she had to buy for groceries. She wondered if any body else ate strawberry jam on their toasted english muffin as well.

ETA: No Italics required because you're reporting thoughts, not showing them.

To need Italics, you'd have to say:

She wondered, does anybody else eat strawberry jam on their toasted english muffin?

Blackberry Jelly or Raspberry Jam/Preserves for me on English muffins.

However, your response brings up another neglected facet of punctuation (and dialogue) -- Paragraph Breaks.

To my eye, the construction Meanwhile, should never be found in the middle of a paragraph because it pretty much defines "a change of subject/topic" which is part of the essential definition of a paragraph.

In connection with dialogue, far too many people struggle with pargraph breaks in dialogue because they don't know how to punctuate it:

Leave the quotation mark off of the end of the paragraph if the same speaker continues in the next paragraph. Put a quotation mark at the beginning of every paragraph of dialogue whether it is a continuation or not.

If you want to get exotic, there are tricks you can play with paragraph length and structure to emphasize or de-emphasize points you want the reader to remember. Where a piece of information is located in a paragraph and its distance from the ends of the paragraph determine how well it is remembered by the average reader.