(San Mateo, CA)  --  A 30-year-old Oregon woman is under arrest for allegedly stabbing her brother during an altercation at a San Mateo gas station Tuesday night.  Officials say Evelynn Enriquez and her brother were headed from Oregon to Santa Cruz when they stopped for gas, and a confrontation ensued and quickly turned violent.  They say Enriquez fled the scene but was found a short time later by Foster City police and booked into San Mateo County Jail on attempted-murder charges.  Her brother suffered multiple stab wounds but is expected to recover.