She wasn't drunk I had just got to bed and we ended up talking for like an hour and then text me an hour later to see if I was awake. Why do you think she did this when we haven't spoken in months and why not during the day ? She said she call again tomorrow ...

Yes she obviously misses you. Did you both spend a lot of time together at night rather than during the day, if so this may be a reason why she misses you more at night.

You never know you may be the last thing she thinks about at night.

All the best with your relationship!