|With the new weapon refinery giving Hauteclere a Wo Dao effect on top of special cooldown reduction, Minerva can use many 2-charge skills to great effect, as she'll activate them often and with high power. As the increased power will activate so often, she can use '"`UNIQ--item-672--QINU`"' instead of a damaging special as she'll get a consistent +10 damage every time her special triggers, which increases the healing given by Noontime. If you want Minerva's healing to be stronger, you can replace Noontime with '"`UNIQ--item-675--QINU`"', since the cooldown will only be 2 and will still activate often.
For the A slot, it depends on what sort of role you want Minerva to play overall. If you want her to be a more combat-oriented tank, then attack boosting skills like '"`UNIQ--item-678--QINU`"' will help her. If you want her to be more defensive to keep her HP up as much as possible, then '"`UNIQ--item-681--QINU`"' or '"`UNIQ--item-684--QINU`"' are good options. '"`UNIQ--item-687--QINU`"' is good for getting both, but is currently locked to a unit available only on Legendary banners, and is a much more expensive option. '"`UNIQ--item-690--QINU`"' can be used to keep her safe against Bow units and Excalibur. '"`UNIQ--item-693--QINU`"' can be used as it's a standard option for tanks.
For the B passive, '"`UNIQ--item-696--QINU`"' is chosen to help Minerva double faster targets, which will let her activate her special more often. If using Noontime, then against an enemy who doubles her, she'll double in return and activate Noontime twice in one battle. In other cases, she'll activate it on her first strike and then have it charged for the next battle she initiates. If running Sol, then she'll be able to activate it against enemies she can't double in one combat.
For C slot, '"`UNIQ--item-699--QINU`"' is good for use in flier teams, helping the durability of her allies. In mixed teams, she can choose another skill such as '"`UNIQ--item-702--QINU`"' in either her C or S slots to help her allies move around. '"`UNIQ--item-705--QINU`"' can help her battle multiple enemies at once, as she'll take less damage from each enemy and heal back consistently.
Her Sacred Seal slot can be used for whatever A passive or C passive you couldn't use on her, such as Atk or Def boosting, Iote's Shield, Attack Smoke, or Guidance.