I'd put Iote's Shield in the A slot, Swap is okay, but yes reposition would be best. You can then use another skill in the seal, like Attack/Defense Bond or something else.
I'd also try to fix the IV. You may want -Speed instead of Res. While her res won't be that much better, but improves her matchups with dragons.
Definitely get over QR3 when you can as well.
There are 3 things i would change:
1- Reposition instead of Swap
2- Steady stance instead of Earth boost, boost skills are very inefficient as after the user loses a bit of hp it becomes useless and Beruka's hp is borderline usable for that skill, Silas has Steady stance at 4*
3- Atk smoke instead of Panic ploy, Panic ploy is way too inconsistent: in arena most character with a refined weapon will have over 50hp while in PvE you will face inflated stats
Pokemon GO
Fire Emblem Heroes
Fate Grand Order
Dragonball Legends
Dragalia Lost
IV Calc
Heroes