how old is your child? I first thought she was very young as you said "baby" then you say she has been pickpocketing and calling 999.
Is there anyone (family member, childs father, GP) who can assist you by perhaps providing a charactor reference or anything.
If you have been given any medication for the schitzophrenia then continue with this until you have had a second opion and accept all medical advice.
Take someone with you when you see your solicitor in case you are unable to take in everything that they advise. It may help for a friend to take notes.