Overnight Jaffna train sleeper class realistic for a solo female

Excellent option for a solo traveler. The Yal Devi night train (and the dedicated overnight Northern line service) runs Colombo Fort to Jaffna in about 7 to 9 hours overnight. 1st class A/C sleeper has lockable 2-berth cabins, 2nd class sleeper has open 4-berth bunks with curtains. Both are reasonably comfortable. For a solo female, 1st class sleeper is the most secure option, and 2nd class sleeper is also widely used by women travelers; bring a small lock for your luggage to the bunk frame. Sleeper berths open for booking 30 days ahead and 1st class sells out FAST on weekends; book online or via a railway booking agent the moment the window opens. Pack a light fleece (A/C is cold), a sleep mask, and snacks. Lock your phone to your wrist while sleeping.