Instead, imagine if Shadowheart reversed her Str and Dex. That would give her a 14 Str and she would be able to use a one-handed Str based weapon efficiently. It would make her much more useful on the front line, and her ability to use a shield and good armor make up for the small reduction in Dex.
Shadowheart is a Trickster domain Cleric with Sleight of Hand Proficiency. She's meant to double as a Rogue. She needs Dex, not Strength. 14 Dex actually also makes her better at frontlining than Strength would.
A tanky melee Cleric companion with high Strength and Heavy Armor would be great. Dwarf, perhaps.
