Suggest Treatment For Severe Migraine And Headaches

Mom, 74yrs old newly diagnosed with wet-mac-deg in left eye. Has had dry mac in both eyes for 10 yrs. Has had 3 intra-ocular shots of Avastin so far about 6 wks apart. Since the inception of Avastin, she has migraine headaches for 4-6 hrs every day :(
She has no health-related issues. Weight 130 lbs life-long! No HBP, no cholesterol issues, truly in great health lifelong! Birthed 3 children and never had a hospital stay except for that. The migraines are "killing" her she says.