The latter could definitely be a sign of dysphagia, but the inconsistency in her trouble eating seems odd. I honestly can't really help you there. It shouldn't be quite that inconsistent though unless she was really sleep during feeds on those days.
From your previous post, you can try the simply thick first if you can't get an MBS, but the MBS gives a really accurate picture of what is going on. Try nectar first and then honey, if that doesn't work, then definitely look into an MBS (which I highly recommend anyway). You said that you already read that there is no pain involved and I've never seen a lo reject the barium yet. Hard to believe, but true!
If you have more questions, let me know!