Help her plan and get organized.
Sit down with her and draw up a list complete with telephone numbers and what she can contact the people for so that when she's stuck she can not draw a blank
Ask her what types of jobs people she know has...we often know people who can give us answers free about things.
Encourage her to reconnnect with people she may not have had much time for lately she will probably need a wider support system as in seperations some friends just drop away.
Also I found that answers were key, have her write down her concerns and find the resources for her to get answers. Not knowing her $ there are still free legal clinics to ask simple questions about, offer to call around and find out about general questions for her or go through your rolodex of people you know who might help. Women's shelters/women in crisis are great resources for information.
Help her organizer her finances, her life, I spent hours on the phone tracking down things, finding values, getting things switched into my name. Having a friend who could have come over and just been there for me to watch the kids so I could actually talk to people would have been wonderful. Or see if there's somewhere she could do things like that easily like if she has a community centre/gym that has daycare there.
LISTEN TO HER
this is key most people want to solve problems or say how something reminded them of something that happened so them/someone they knew..
just listen if she's upset. Also ask her what she's having the hardest time with it may not be what you are thinking for me it was
-changing every poopy diaper knowing every poop had my name on it someone changing one diaper would have felt like a weight had been lifted off me, the garbage... my husband did that and I resented it.
Money wise I would not go there if possible.
My family offered much $ but it was better they supported my efforts to secure support, change my tax status, go with her to the bank to get a line of credit or get some grace period on mortgage/bills, if they help me throw a garage sale (find money at home), show her how she can save more in some way. They are his kids to support and sometimes a loan can hurt if its seen as a gift/income/loan in a seperation situation or if she needs to apply for an income based free legal help, daycare.
You can help in ways that aren't giving money, what about offereing to have her over for a meal once a week, or bringing her a frozen dinner she can heat up when she's too tired?
Like I said my family offered me money and I could have taken it and tried to pay my bills instead I hit my ex heavily with all the legal documents detailing how much support he had to give me and got guidline support agreed to in the interim in the first two weeks. I also got subsidized daycare for the kids lined up incase i need it, changed my taxes over to qualify for tax credits I could as a single mother recieve. I joined a women's suport group that had great resources - transitional housing counsellor who helps newly seperated women find and secure decent housing (not government but they probably do that too as often without income its hard)
You will be a good friend if you show her how strong she is and that she can do this not step in and take over or give her money.