You won't have a hard time getting to Westgrove. Just go straight after you exit Sta Rosa then you will notice on the right side of the road the Ayala West Grove sign. Make a turn there and then you'll see a guard house right away. Ask the Manong how to go to Westgrove and they will give you directions with the humps as reference

Pero from the guardhouse you can just go straight tapos the first major intersection you turn left then first street right then go straight. Dudoluhin nun Westgrove.