Dog question. Not pregnancy related

So I have a morkie. She is 3. She isn't house trained. I have had her two years and have worked my but of trying to train her but she doesn't get it. You can have her out 50+ times a day and she will come right in and poop in the house. I want to get rid of her because I have a 3 year old and a new baby coming in march and won't have time to fool with her. But I love her and feel very sad about this. I have read that crate training works? Does anyone have experience with this? She knows she isn't supposed to potty in the house because if you see poop and go to clean it up she either won't look you in the eyes or she runs away and hides so she knows she is doing something bad. But will crate training help