I'm An Architect, practicing from the last 8 years (Nir'Aakar Design Studio), your mother is absolutely right at her place. It's hard to clean jaali work on a regular basis. You have many alternates, you can go for natural wood, stone designs (you live in mountains and your front elevation should reflect the image where you live in. If you will take some design in wood or stone instead of jaali .....toh aapka Ghar mountains ko reflect krega, apki personality ko reflect krega, Himalayas ko reflect krega Whi agar aap jaali use krenge to wo rajasthan, mugal theme ko reflect krega So, architecture point of view and apke mother k point of view se ..she is absolutely right