You cannot fix her childhood issues. Nor can you push her to fix them. Trust me, you telling her she needs IC to fix them will not go over well. She knows where she can go when she wants to deal with them. You are trying to control the situation to get her to do what you need her to do.

what has happened to her is very sad. But she has to choose to deal with it. If she came to you asking for help, then help her. But don't tell her she NEEDS to see an IC an deal with her issues. She knows what she needs to do. She needs to choose to do it.