More on divorce here:
https://www.ch.ch/en/right-to-reside…th-or-divorce/
If she hasn’t got a C permit yet she should get one asap. A 15% only job isn’t going to help if she only has a B permit.
Given the abusive nature of the relationship to wife and child there’s a good chance she could get sole custody.
https://www.ch.ch/en/divorce-parental-authority/
She won’t get any maintenance contributions from him, but the child will and she can get help to make sure those payments are made.
https://www.ch.ch/en/divorce-and-mai…contributions/
May not be necessary to wait 2 years before divorcing.
“•In exceptional cases, a divorce can be granted before the two years are over if it is unreasonable to expect one of the spouses to continue in the marriage, for example in the case of physical abuse.”
https://www.ch.ch/en/divorce-procedure/
Depending on how bad the emotional and verbal abuse is that might also be taken into consideration in any unilateral divorce proceedings.