A Chiang Mai woman found her husband in bed with his mistress in a San Sai short time hotel.
Chaweewan, 27, created a commotion outside room 16 around midday Sunday causing 19 year old Thitiya to open the door.
Chaweewan pulled out an automatic .380 and a struggle ensued in which her younger rival was shot in the right thigh.
Husband Makoree, 35, called rescue services.
Police took Chaweewan into Mae Jo station and charged her with causing grievous bodily harm and weapons offences. – Sanook