I'm SUPER new to battling and am slowly finding my way around. My pet, Atainatoo, is Tier 10 with the following stats: Level: 667 Strength: 1665 Defense: 1668 Health: 1671/1671 Speed: 1665 Can someone please recommend a good healer for her? Also, is there any way she can beat the Maliss Blopper. I tried once and got creamed. I'm going for broke here ... Scrolls. I have several, but they're not listed on the battle page the way potions are. Am I missing something here? Thanks so much for any help you can give me.

Once per battle healers? Phoenix quill and reviver of the lion are the two best. Phoenix quill is in season for the next week in the MC, reviver will come to the antique shop eventually. As for maliss, she may be more suited for a t11 pet. Maybe with a possessed bow, a dark blocker, rv, sts, aon, negating pylonic, and dark potion you could get a win. Cobalt eternal and sancturia exodin scrolls could help too.
Btw healing is disabled against maliss
Yes, those once per battle healers. I've been doing Battle Quests and just can not get passed level 16 but I've been close so many times. I just bought the Phoenix, thanks so much! I checked the possessed bow at the SL and see it's a Blackheart Hollow item. Maybe one day I'll get lucky and find it. There are none in the shops at all. What is a 'dark blocker'? I see I need to create more scrolls. Are they supposed to be visible when you're battling? My aren't.

yes your scrolls should be visible. They even should show up with Dean who is now in the BQ queue and that challenger disables scroll use.
Check and see your scroll list and see if your default set has too many AP for the pet you're battling with.
MCAB has a nice across the icons blocker and in combination with Denizhen this can knock out seven of everything. Blessed Trident blocks a lot of wind which the Maliss Bopper does a chunk of. Either Cobalts or Exodins can shave off the physical punch she does for a few turns and can also blunt the dark icons on the rare occasion. If you're really getting stomped put crit tears in everything since this challenger is not very fast to start with and use Blackmoons War Plate if youve got it and hope to attrit the Bopper with the occasional crit-stomp before it gets you.
I'm not understanding you at all. I've checked my scroll page at the BC and it says I have 2 sets, each of 12, and they're the same. I don't know if I created 2 sets of each scroll or if somehow I set it to duplicate. I created most of those scrolls years ago, long before I gave battling a second thought, just to use the AP my pet was accumulating. I haven't touched my scrolls in months so it's not a case of waiting for the cache. I'm completely lost where you say to check my scroll list to check for too many AP. How many is too many and how is something like that possible? I have so much to learn!

Gelatin Slayer will work as a dark blocker. possessed bow doesn't currently stock in BHH I believe, they control how many of those go out. It would be nice if they brought them back though, right now it's worth 400m+
as for your scrolls, I made this guide awhile ago, if you still have trouble after reading that, let me know.