Puppy found near minute maid last night. Need suggestions on how to reach out to homeless people in area.

My sister found this dog on 6/2/2023 and posted to a few rescue and lost pet groups on FB. Someone suggested that she may belong to a homeless person since the found her where they did and had a collar and leash. I'm looking for suggestions on how I can spread the word to find this dog's owner. But also putting her up here in hopes someone may recognize her. This is my sister's post from FB: Found this puppy at Irma's downtown across from Star of Hope right in front of Minute Maid Park. No chip and she already had a collar/leash attached. Please share so we can hopefully find an owner! Thank you!