Sister and abortion...

I just found out my sister has had 3 abortions in the last couple of years. I am HIGHLY against abortion but that's not why I'm so upset! My sister knows for a fact my husband and I have been trying to have a baby for 3 years now. I have actually told her before that if she got pregnant that I would gladly adopt the baby from her and raise it as my own. She agreed with me that I would be a great mom to her kids. She is 24 years old and doesn't really have a stable life. She likes to drink and I believe do drugs as well. (Not confirmed just a rumor!) I just want a baby so bad and her aborting babies hurts me so much. Not a lot of people are going to understand where I'm coming from but I just needed to vent. I'm so hurt and upset right now. :(
UPDATE: She's pregnant again!! And keeping it! :/