That's been my interpretation. As long as an item doesn't specify "non-combat" then it's fair game to use for any check.
If merisiel is using a weapon that specifies that she uses her dexterity die for her combat check, then yes, these cards would add to that.
But if she is attacking with a weapon that specifies she roll her strength die, or if she is attacking unarmed, then she is using strength and not dexterity, so these cards would not help.
It is important to note she only gets to use dexterity for her combat check if she uses a weapon that instructs her to do so. There had been some confusion that she could always use dexterity simply because she was a rogue. But she needs a weapon that instructs her to do so.
Those two cards on Merisiel might even be a little overkill. Her dexterity die is already so good... but to answer your questions, yes. She can use those on any dexterity check, whether it be to defeat a barrier with acrobatics/dexterity, acquire a longbow, or in combat when she's using a ranged weapon (or any one that calls for the dice you use in the check to be that of your dexterity skill or one of its subskills.)
+2 Dex on Merisiel, +2 from Snakeskin Tunic and the Belt, +1 from the weapon, has been pretty clutch for beating villains, to say nothing of dealing with regular monsters. A +5 out of the gate means you can play the odds on medium-sized monsters and save your blessings for explores.
My other skill point has gone to CHA aaaaand... hey, I just realized I've only spend 3 skill points instead of 4!
Thanks, guys and killer point on her having to use STR if she has no weapon.
I gave her a Weapon card feat and a hand size of six so she has a bow rather often. Still, I've put all her skill point bonuses in DEX and I rather regret it (especially with that belt and armor bonus).
How did u guys divvy up those skill points for merisiel?
My wife and I have a team with her as Merisiel and I'm Sajan. That duo has just started deck 2. My wife so far has taken 2 skill feats in dexterity, largely because she had about 4 consecutive scenarios of horrible rolls.
I tried to start a thread about each character. Merisiel got a little bit of attention in it. You could read whats there, post what you've done, and maybe drum up some more interest in discussing her.