I'd prob leave BT tonight as she had a short nap, so 7pm.
But then tomorrow I would push the nap 30 mins later, if she needs just slightly less sleep now (judging by what you said looks like 30 mins) then the nap coming too early for her will cause an EW. If she really needs the full nap (like mine, he did better on full nap and a shorter night) then
WU
set nap 1.00 - 3.00
set BT 7.30
and FX she will move her WU to 7am
If after a few days she hasn't woken later I would add another 30 mins to BT (so 8pm) until her WU is later, you could then bring BT back to 7.30pm. The really late BT is just for a few days to encourage her to change her body clock from the 5.30 WU where she is stuck. She'll get OT with such a short night but that's what brings on the catch up night which breaks the body clock.
hope that makes sense