How can I keep my mother positive?

[ElaineM]

You have come to a good place on the internet for her2 positive patients.
There are many, many people here who are doing, have done and will have chemotherapy for her2 breast cancer.
You or your mother should talk to her doctor and/or nurses about her concerns and side effects. Help can be offered for almost every possible side effect. It may be hard for doctors to determine which side effects a person may experience before the person actually starts the treatment, but most of them are more than willing to help with side effects after they know which side effects a person is experiencing. Some cancer centers can direct patients to other kinds of help too.
Good luck. Tell your mother to hang in there. She has many friends here.