That was a bug at first but she liked it and kept it.
Not necessarily a bug, just a question, it seems like there's no way to use more than one inventory slot by collecting items in advance of needing them. I'm only able to get the first item, use it, then get the next item, then use it, etc. Is that intentional?
The original idea was to collect more items but, you're right, it ended up being just one at a time.