You're making several mistakes here.
First, you say you've quit your job to focus on this new venture. Have you prepared a business plan as part of this? Do you have a projected cashflow? Do you have a marketing plan? Have you identified who you want to market to?
Second, Facebook is the wrong medium for this kind of business - you need something much more locally focused. Your local newpaper and/or (if there is one) free local magazine. (We get a very glossy one circulated here which has loads of articles/ads for local businesses and yours would be perfect).
You don't need to consider advertising in them all the time, but you should be aware that you need to so something to create awareness of you in your neighbourhood.
Have you branded your car/vehicle that you use to visit people? Driving around your neighbourhood with your company name/telephone number/email address is a really good way to increase relevant awareness and, hopefully, interest.
Contact the editor of your local paper(s)/magazine(s) and offer them a free treatment or two, to get you some good PR - if you're doing something new/different, for example, this would form the basis of a story, which papers often want/need.
Print up a good quality leaflet/flyer, and distribute it in the area you have identified as your target market/area. It's worth spending a bit of money here to make it look (and sound) good, as you're offering something that's about aesthetics. As part of that you could include a coupon for money off a treatment, or a free treatment if they buy another treatment.
Why don't you have a local MN? I thought MNHQ were really keen to develop the local boards. But if you really don't have one, ask MN if you can pay for an ad on MN, and make sure that the subject line clearly identifies the area that you're practising in.
You say that other marketing things have been too expensive/too little a return - what have you tried already?
Third stop relying on your clients to do your work for you. They won't. Or if they do, it's something very nice to have (word of mouth is irreplaceable,) but you can't count on it. And stop taking it personally! This is a business you're trying to run.
Fourth, for goodness sake stop giving your 'client' so much free stuff! People don't value things if they're free. And this woman is really taking the piss, never mind taking up time that you could be using to earn an income elsewhere.