Leaving without paying last month rent

Hi all,

I'm about to move out of my apartment and I'm not sure whether paying last month rent or not. I doubt my landlord will pay back my deposit. We had a couple of problems before. She never really fixed things properly when I asked her to do, lights in staircase were broken a couple of times, water coming in through walls and window leaking into to plug. I made a complaint to dublin City council, because she didn't look after all those things. But now she keeps on sending me messages telling me if I don't reply she will come to the apartment tomorrow and please pay until the 9th of February. I got advise of a friend and she told me to ignore her. But I feel really uncomfortable. My lease was until the 19th of January and I gave her 35 days notice so therefore I would have to leave around the 9th of February. I font know what to do.

Can she do anything if I don't pay? Also she wanted a letter of my parents guaranteeing payment if I don't pay.

Please help.

Thank you.