If my regular CRP (not hscrp) level is 0.10, HDL mildly low at 42, LDL and triglyc are low - does that mean I have a low risk for a heart attack? 26/f

Yes. Females in your age group have an extremely low incidence of coronary artery disease. The chance of having heart attack is extremely low and would not likely be the result of typical coronary etiology of heart attack i.e. Plaque rupture . However heart attacks can occur from coronary dissection or other rare conditions. Pregnancy associated causes and blood clotting disorders are also rare.
Most likely yes, but. But i would still like your chol/hdl ratio. But your profile is quite good!