I see. What weight class is she in btw. Would there be significantly less knockout power expected from her and directed at her by opponents in this class.
Body weight isn’t a magic bullet as some calisthenic gurus will contend however there is plenty of room to progress. If one goes from say a push up on the knees to a proper push up then you’ve made real significant gains. Push Ups can be progressed further to clapping, 1 handed, weighted, paused etc. Body weight is not better than free weight tho so whichever you choose there’s a way.
If you want to go with weights may I suggest that you perform a strength program focusing on relevant musculature and not one ounce more as outlined previously with the focus being on explosive movement at all times. Concurrently Inherently explosive movements and sports specific training should be performed to allow your athlete adapt her newfound strength and body mass changes. Training the qualities separately wouldn’t promote potentiation and carryover of one attribute to the other
Can she clean an olympic barbell? Are you familiar/comfortable enough with the power clean to teach it? If not a very good alternative is the kettlebell swing. Hell I think in this case it’ll be better: Less technical and safer. Look at crossfit and oly weightlifting lots of lightweight women moving big weights.
Jumps, Leaps and Bounds are also crucial with the explosive hip flexion required to land devastating kicks and knees something that is neglected and frankly decreased by powerlifting training (due to increased leg mass decreasing acceleration of the limb)
Try not to get too caught up in strength. You don’t have to be strong to throw an effective punch. It can help sure but you just have to accelerate your enough fist so that when you decelerate it with someone’s face it imparts plenty of force/momentum. Pro lightweights don’t knock mofos out because they are strong. I’m stronger. I’d still get my arse handed to me.
Think there’s a lot more but can’t think of it off the top of my head. Might post later