A 30-year-old primigravida at 32 weeks' gestation has blood pressure readings of 152/96 mm Hg on two occasions 4 hours apart. Earlier in pregnancy her blood pressure was around 110/70 mm Hg. She has no headache, visual symptoms or right upper quadrant pain, and urinalysis is negative for protein. Fetal assessment is reassuring. According to SOGC guidance, what is the most appropriate next step?