Not a Buddhist either, but I've known some: the issue there is Western folks who become Buddhist are already open-minded enough that they've found Buddhism, so they may not be a good example?
I'd suppose that the way you "offend" anyone's religion is if you MIS-REPRESENT it unfairly.
People unfairly slam "all Chrstians" with unfair stereotypes or mis-characterizations of Scripture. Certainly it's an insult to a billion peace-loving Muslims, to depict them "all" as anti-semites or fanatics or hate-filled terrorists waiting to convert the West with sword and suicide-bomb.
Sometimes people DO confuse their "religion" with their own cultural prohibitions, and then in error take "religious" offense
(an example might be how some Muslims are extreme about women wearing the veil -- to the point of violence -- but then you hear
other Muslims say that nothing in the Koran even demands a veil, that's just one segment of Middle Eastern culture trying to impose itself on everyone's Islam)
What is it about your story that you fear might 'offend' Buddhists?
Buddhists seem pretty cool, pretty laidback. C'mon: where a Muslim might issue a fatwa against you for depicting the Prophet (insert blessings here) in a movie -- even if you depicted him with utter devout respect --
Buddhists tell their kids stories "Well, when the Buddha was still an ox, in a previous lifetime ... When the Buddha was a monkey, he did this or that ..."
Anyway, that's my dos centavos of non-expert opinion!