Hi Nikki,

Thank you for contacting Mearto with your appraisal inquiry.
I'm not finding any listed Native American artists working in the late 20th Century by the name of G. Gibson but did find this that suggests they are a fairly commercial artist, if on a lower end:
(https://www.etsy.com/listing/868528653/portrait-painting-of-a-native-american?click_key=0cb55666de2145ae137a115e0e968f86ac0d36ed%3A868528653&click_sum=e57f277d&ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=native+dancer+art+gibson&ref=sr_gallery-1-8&organic_search_click=1)
Based on the photos and information provided, and subject to examination, this is:

Native American School, late 20th Century
Feather Dancer, 1979
signed G. Gibson and dated lower right
oil on canvas or board
10 by 7 inches, in a wooden frame
CONDITION: not examined in person but appears to be in good condition
PROVENANCE: inherited
$30-50*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.