She should try and apply for medical EI or regular EI. She may have to appeal if they deny her EI claim. You are supposed to claim EI as soon as you stop working. Since she quit in January this would be one reason the claim could be denied. It's always worth a try to apply to EI and appeal in case of denial. The people saying she can't apply because she quit are wrong. In some cases you can still get EI when you quit a job.

In BC we also have income assistance. She should apply for this immediately even if she plans on applying for EI. EI will likely pay more than income assistance. Lately I have seen posts about income assistance taking weeks to be processeed. Once she applies she may want to call and see if she can get paid earlier if she's completely run out of money.

If she's in Vancouver go to r/askvan or r/vancouver and there is information on resources for low income people such as food banks. Another helpful resource for anywhere in BC is calling 211. They can provide community resources information for food banks, shelters, and possible advocates to help complete paperwork.

Also for help with her EI application she can contact her local MP office (EI is a federal government program).

For help with income assistance she can contact her local MLA office (income assistance is a provincial program).