I think you are missing something. Trading on USD pair also means price action is tethered to tether, not on bitcoin and when bitcoin price rises up XRP also rises up but losing it's BTC value so it is not a valuable rally if I must say. If we could see a lowering of BTC dominance and BTC price while XRP tether value is increasing, that I could say is the time that XRP would bounce up. A chart like this just show a correction from the oversold area of the RSI.