Does Reimu have the same bomb penalty delay as Yuuka does?
I did watch one of my older recordings, apparently she also does although I think it is a little shorter than Yuuka's, although enough to autocollect most point items in time.
Edit: I noticed that the values for Mima and Reimu's bomb should be the same according to what the game shows me.

Look closely at the text, it is the same. The first one is from my old (and still haven't improved that one) 165M Mima EX run and the second one of my Reimu 177,9M clear (first file I saw in my folder for Reimu in the extra stage, I still have the 193,6M run somewhere.)
And here is a screenshot what yellowing a point item that is not at dream bonus looks like:

Edit: Watchig both how much my Reimu and my Mima run got from the same pattern bomb shows a significant amount of score more for Reimu, although Reimu's bomb was used closer to the point items than Mima's, I'm not certain but either Mima's bomb max value collection time is very short or the value of the point items does get displayed wrong.
Edit: I watched the same Mima bomb again, seemingly the first autocollected items are at max value but quickly the later ones aren't. So for Mima it might be more handy to bomb as close as to where the items are when the dream gauge is max. This does however show that the value quickly drops but that the first few ones are at max value. (Atleast the ones in my run show that.)

It is the same bomb as the earlier picture, showing that the last point items are collected at 51,200 value rather than 400,000.
Edit: Marisa's bomb also instantly depletes the dream gauge until it looks cyanblue. It is too flashy to see at which value they were collected. (apparently I used only 1 bomb against Alice.) but at the end it is at 51,200