Btw airdodge and spotdodge bat within are both frame 1 and invincible on I think frame 3, and rolls are I think bat within on frames 3-5. Also here's some data and stuff:
Jumping offstage and holding upair and nair for the bullet arts extension is amazing for gimping recoveries.
Also, when the opponent is descending onstage after being launched up, you can jump up and hold upair, which turns what would be a 50/50 of airdodging or being hit for any other character, into a guaranteed hit/frametrap, because if they airdodge upair still hits them, and if they wait then upaid still hits them. Upair also has amazing range and priority, with a massive hitbox all around you. Being able to do this means that at pretty much any % you can do an upthrow > hold upair, and you can follow up with another aerial afterwards. This esentially gives her a great combo throw, and this should be used as much as possible in the neutral because of how powerful grabs are in this game. It also kills Mario on FD at 125% with no rage if you land the first hit of upair. And here are my notes for dealing with Pikmin:
Bat within makes all pikmin fall off you instantly. Bat within is triggered by latched pikmin hitting you.
Witch time can be triggered by latched pikmin hitting you, but you must be close enough to olimar for the witch time hitbox to hit him(it extends a bit beyond the purple aura) just like with other projectiles.
Shorthop hold upair is good for getting rid of most pikmin on you, but can miss some on your head.
Doing full heel slide gets rid of all pikmin on you and kills retreating ones.
Dtilt is good for getting rid of pikmin on your lower half and killing retreating ones.
Uptilt is good for getting rid of pikmin on your front and upper half, and killing incoming ones.
All bullet arts and all other moves are pretty much useless.
Be wary that while pikmin are on you they constantly cause hitstun, essentially giving you terrible framedata on everything you do. This can mess up combos and timings, and make you much more punishable.