For your daily running, an electric car will do just fine, assuming you can charge your car at home, your place or work. For your highway family trips too, it will do just fine if they are about 250 to 300 kms. However, any more than that or if the route involves lots of hills, then you will need to top up. You will need to plan your travel accordingly to make sure there are sufficient chargers on your route, as they can be occupied or even not working at times.
With your Rs 15 lakh budget, you should consider the Tata Nexon EV Long Range version. Furthermore, the Nexon will also satisfy your requirement of safety as it is very well equipped and secured a 5-star BNCAP crash rating.