Your relationship is not healthy at all. I was also in a relationship with a woman and things were the complete opposite, we were too attached which was unhealthy as well. When you are in a lesbian relationship is even harder to find a balance and both parties have to work extra hard to make the relationship work. I recommend you try to put yourself and your daughter first. You have to love yourself in order to be able to love others and in order for others to love you. Try to find someone closer to your age, I am sure there is someone out there who will make you feel loved and valued. Make sure to also work on yourself and know that you deserve more.