Travel to Denmark to save my relationship

Hello everyone! I am Dimtris from Greece 29 years old. In a few days my fiance has her birthday and she resides in Denmark. We are together for many years yet we haven't seen each other for 3 months since i live in Greece. For the past two years we managed to hold our relationship although we had difficulties doing so due to the distance. We love each other and this is what holds us together. We plan trips from time to time whenever we can afford it to get together after some months of not seeing each other and this has helped us as well. But this time it is different.

After she has spent 2 years in a foreign country trying to improve her life she has become moody. In an effort to give her hope and hear her smile I promised that i will be with her for her birthday in March. I had made a budget which i considered would help me accomplish my goal with dignity and buy her a little something for her birthday. Although everything was going smoothly and i was 100€ away from the total amount i needed a sudden medical issue led my mother to have a costly surgery in mid December and i helped her financialy (since her only income is my father's pension) leaving me with no budget for this trip. Since then i try to stand on my feet but I would hate myself if i wouldn't support her in her time of need after all the sacrifices she has made for me helping me graduate university.

My fiance is expecting me to be there but i don't know how. I have no money for the tickets and obviously i can't afford any expenses there. Everytime we speak on the phone she shows how impatiently she is waiting for me and i will feel really ashamed if in the end i won't make it. I know that men should keep their word and make their woman happy and this is what i intended to do if it wasn't for the unexpected health issues that arised as i forementioned. Your help will be highly appreciated! She has a rough time being alone in a foreign country and this has affected her psychology in general. My presence there this special day would make her more than happy!