I have always played bless that it affects any kind of check. Attack, save, ability check. I don't know if this was a houserule I picked up in 3e or if it was RAW in some edition...but it has always just made sense to me. Bless is a prayer intnded to give the subject a little extra luck. I'd like to stick with that. But before we do...is there someother low level cleric spell that gives an edge to ability checks? I don't want bless to overlap other spells that are already intended to do something similar.
The cantrip guidance is for ability checks. I have had cleric players spam it for any ability check that they have to make, which I generally allow for any check that is made intentionally. (Provided that they have the time to cast.)
Guidance is definitely easy to abuse. I'm playing a cleric right now and try not to spam it, lest I become the D&D version of that person who prays to find a good parking spot at the mall (sorry, grandma).
I know she was a scout, and the mods to her rolls that we've seen suggest that she does in fact use the Scout statblock. If that's the case, I'd like for her and Bert to switch duties, since she should have advantage on perception checks from Keen Hearing and Sight.