Seriously any upgrade/enhancement for her would be amazing. She's literally stuck with you forever so getting a few more options for different playstyles would be nice.
Some kind of errand after reaching level 7 perhaps (since Glacial rift is lvl 6 zone).
Starts with the mace getting randomly changed: shaft getting longer, or number of flanges getting doubled. Then champ adresseses the issue with Ashe and hypothesising that proximity to champ's malleable body affects Ashe too. Or, if champ has magical class or background, they narrow the problem to Ashe's shapeshifting starting to affect her vessel, it being the mace.
The champ who didn't clock shapeshifting has to visit local transmutation expert for expert opinion while the one who did visits for a second one. This talk concludes with a solution of stabilising the mace: getting extra material (gold (from smelting electrum coins) and bronze (buying/taking some from Orgrish)), then going to Ashe's lair where said dragon-mace originated and spending a night there in Ashe's dream while mace absorbs extra materials... or something.
Quest ends with Ashe being able to change form (and properties, like getting catalyst on it or trading armor pen for sexiness, for example)) of her vessel: bow, sword, axe, dagger, spear (and their 2h counterparts) etc.
Tho customisation of Ashe as a weapon might be a coding mess