My LTR of 2 yrs had her birthday on 11th oct. I asked her if i can come visit her (since I am living away from the city she resides in currently due to work). She said no she didn't feel like celebrating it this year since she was having a mental breakdown due to some career issues (she's seeking therapy and has been diagnosed with moderate depression). 2days before her birthday she told me her friends are planning something and i should also come. I said no since it was too last minute to book tickets etc. I called her up to wish her birthday on 11th at 12:15 (3 times) she didn't pick up and texted me that she was in the midst of cutting the cake (just before i called her she was on the phone with someone as it was busy). I didnt make a big deal about it and just texted her happy birthday. She texted I love you etc. Even the day before i called her 2 times but she replied with a text. So now it was a total of 5 calls with no call back. I didnt bother to call her at all after that. on 13th she tells me she is going to a trip with her friends (all girls). I acted cool and told her to have fun. I didnt call or text her at all after that. She kept sending me pictures from the trip and kept texting me about how she missed me and wanted to video call. I didnt get angry and kept my cool and told her the same thing but didnt initiate calls or text. She called me a couple of times and i called her back but didnt linger on the phone for more than 2 mins. But i want bitchy. She would call me after 12 am in the night but i saw no point talking to her that late like a plate. So i would call back the next day. She came back a couple of days ago and apologised for being distant and cold etc. She said she was depressed and just wanted some time to herself (but she kept calling me and texting me all through the trip; sometimes multiple calls). I was completely cool but during the end of our conversation she blew up when she started demanding why i didnt write her a letter this year. You see, i wrote her a love letter on her birthday every year since we have been together. She has asked me to write it frequently but i ignore that. Its like an event for her. This year too i wrote it but since she blew me off by not calling back i didn't send it to her. No she kept being aggressive with me about how it was my fault that her birthday was ruined because i didnt send her a letter and i could have sent her on text or kept calling her until she picked up her phone. And that since she was drunk she might have missed the calls (doubtful) I just told her i tried 3times and i dont want to fight over it she asked me to talk to her later. Its been 3 days since then. The next day i sent her a scanned copy of the letter but she said she'll read it later when we would have a video call. Since then i have called her 2 times on the video but she said she was sleeping or busy so we should talk later. I didn't push it and hung up. She was at her friends yesterday so i dint push it. Even today there has been no msg or call from her. Though she did tell me she was going to therapy yesterday and taking medicines for depression. Now i don't want to be an asshole or anything but i have an exam in 20 days and she is just creating unnecessary drama. She was being all sweet the day she came back and even apologized for being distant and kept asking me if things are alright between us although she wasn't distant since i was the one who never picked up her calls after she avoided me on her birthday. Whats my move here? Should i just let it be or msg her again or just call her?