Halloo! I have a few people for you, none too specific though:

My Hogsmeade Dwellers:
— Irene Crawley is a painter and art conservator at the Magical Portrait Gallery! She's generally very jovial and friendly with everyone, and likely can be seen frequently around Hogsmeade.

— Hestia is the Barkeep at the Hog's Head. She can be a bit brash and blunt, but she has a soft spot for a lot of the orphans she sees on the street and has already taken in a few of them under her wing (aka, made sure they had a decent meal, or place to hide if they got in trouble). She's a con-artist and thief however, so might not be for Ann xD

— Malice Wakefield is my reporter! She works for the DP for Crime & Politics so I can see her potentially developing a relationship with Ann if she had any questions about wands and their functions!

Law Enforcement:
Faustus Prewett here is Head Auror, so I imagine he might know Ann if he needs to ask her questions about wand lore!

Meredith Edgecombe works at the Ivy Leaf Bakery which has a branch in Hogsmeade!