Female, 32, with overly hollow cheeks and manly jaws - injectable filler or fractional laser, or what? (Photo)

you have a slight negative vector in midface. and quite the hollowness in the cheek areas. someone like yourself will require a lot of filler to fill those in. Voluma is good option. if you were my patient I would consider and offer fat injections to create a foundation for your face then add Voluma if needed. in my experience that gives a better result and is rather cost effective for most patients.

Dear beastface,
It appears your midface has lost volume. Midface can be sunken from bone and soft tissue depletion, and that accounts for your sagginess. From your picture, you have lost volume in the anterior medial cheek, the submalar and parotid area.
Your options include hyaluronic acid filler, collagen stimulators and fat grafting. 
Hyaluronic acid fillers have the strongest evidence for safety and efficacy, with several level 1 evidence studies conducted. Of which, Voluma is FDA approved for the midface, with longevity of 18 months on average. 
Collagen stimulators, for example radiesse, sculptra take time to achieve peak results and possess mainly level 2 evidence to support its use. 
Fat grating is a surgical measure, but is operator dependent. 
For a straightforward treatment, I would suggest hyaluronic acid fillers. Filling up the abovementioned areas of volume deficit will help feminize your features and solve your gaunt and bony look.