If as you have described above she has been in Canada almost all of this time, there is NO issue and should be no risk of refusal or revocation. It means they might take a bit longer to check because no current card/no recent files. I bolded the relevant part above: NOT a factor in eligibility.“The length of time that has passed since a PR's status card has expired might (only might) have some influence in the extent of scrutiny given to their application for a new PR card, but that would be about a circumstance triggering a closer look, NOT a factor to be considered in determining whether the person is a PR eligible to be issued a new PR card.”
I am concern with regards to your comment that they might revoke her status because the length of time her pr card expired has passed.
Repeat, no, not a negative. Apply for one or both or none as you prefer. My suggestion would be both.I actually wanted to apply for both so she has proper valid documentation. Will it pose negative matter if she apply pr card renewal during the process of her citizenship?