Since you gave it some soil mix, I'd remove the fert spikes and seek proper nutes. I've heard that fert spikes are generally avoided in container growing as they tend to severly burn. I don't know this from personal experience, but I do know you'll want to be able to control the nutes she gets. Even using a fert with the correct N-P-K will need adjustments once in a while.
A fan would be helpful, too. Will strengthen the stem.
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You could do as mentioned above, but, increase light and hope she's not too far into flower to re-veg for a while longer.