Oh, I was wondering if we were going for one of the D&D pantheons in particular since there is the Dragonlance, Forgotten Realms, Eberron and Greyhawk ones... Hmm though if we're going for all of them, Alexia will definitely worship multiple good deities of protection and light. Her Holy Symbol will likely be a customized pendant of her creation not dedicated to one specific Deity but burrowing elements of the Godly ones. Thinking a perfectly round pendant with a sun motif and an eye in the middle of it. The names of various Gods written in runes behind it.